diff --git a/code/__DEFINES/~doppler_defines/is_helpers.dm b/code/__DEFINES/~doppler_defines/is_helpers.dm
index f9c1c52531c29..02e0c61088246 100644
--- a/code/__DEFINES/~doppler_defines/is_helpers.dm
+++ b/code/__DEFINES/~doppler_defines/is_helpers.dm
@@ -3,5 +3,6 @@
 //Customization bases
 #define isfeline(A) (isfelinid(A) || HAS_TRAIT(A, TRAIT_FELINE))
 #define isinsectoid(A) (is_species(A, /datum/species/insectoid))
+#define issnail(A) (is_species(A, /datum/species/snail))
 //Species with green blood
 #define hasgreenblood(A) (isinsectoid(A) || HAS_TRAIT(A, TRAIT_GREEN_BLOOD))
diff --git a/code/__DEFINES/~doppler_defines/mobs.dm b/code/__DEFINES/~doppler_defines/mobs.dm
new file mode 100644
index 0000000000000..9e06c02bb5eaa
--- /dev/null
+++ b/code/__DEFINES/~doppler_defines/mobs.dm
@@ -0,0 +1 @@
+#define BODYPART_ICON_SNAIL 'modular_doppler/modular_species/species_types/snails/icons/bodyparts/snail_bodyparts.dmi'
diff --git a/code/datums/elements/lube_walking.dm b/code/datums/elements/lube_walking.dm
index 8ab6b2b760285..816f0702a20a3 100644
--- a/code/datums/elements/lube_walking.dm
+++ b/code/datums/elements/lube_walking.dm
@@ -47,9 +47,19 @@
 	if(new_resting && lubricate(snail))
 		snail.add_movespeed_modifier(/datum/movespeed_modifier/snail_crawl)
 		RegisterSignal(snail, COMSIG_MOVABLE_MOVED, PROC_REF(lubricate))
+		//DOPPLER EDIT ADDITION BEGIN - This is to prevent snails from achieving FTL speeds without gravity, think of it like snails affixing to walls irl.
+		ADD_TRAIT(snail, TRAIT_NEGATES_GRAVITY, TRAIT_GENERIC)
+		snail.AddElement(/datum/element/forced_gravity, 0)
+		if(HAS_TRAIT(snail, TRAIT_SETTLER)) //This is to keep settlers from reaching FTL speeds too.
+			snail.remove_movespeed_modifier(/datum/movespeed_modifier/snail_crawl)
+		//DOPPLER EDIT ADDITION END
 	else
 		snail.remove_movespeed_modifier(/datum/movespeed_modifier/snail_crawl)
 		UnregisterSignal(snail, COMSIG_MOVABLE_MOVED)
+		//DOPPLER EDIT ADDITION BEGIN - This clears the forced gravity so they're affected by it while standing.
+		REMOVE_TRAIT(snail, TRAIT_NEGATES_GRAVITY, TRAIT_GENERIC)
+		snail.RemoveElement(/datum/element/forced_gravity, 0)
+		//DOPPLER EDIT ADDITION END
 
 /datum/element/lube_walking/proc/lubricate(atom/movable/snail)
 	SIGNAL_HANDLER
@@ -57,5 +67,6 @@
 	var/turf/open/turf_standing_on = get_turf(snail)
 	if(!istype(turf_standing_on))
 		return FALSE
-	turf_standing_on.MakeSlippery(wet_flags, min_wet_time = min_time_wet_for)
+	turf_standing_on.MakeSlippery(TURF_WET_WATER, min_wet_time = 1 SECONDS) //DOPPLER EDIT CHANGE: Roundstart Snails - No more lube - ORIGINAL: turf_standing_on.MakeSlippery(wet_flags, min_wet_time = min_time_wet_for)
+	turf_standing_on.wash(CLEAN_WASH) //DOPPLER EDIT ADDITION: Roundstart Snails - Snails Keep Clean
 	return TRUE
diff --git a/code/modules/surgery/organs/internal/eyes/_eyes.dm b/code/modules/surgery/organs/internal/eyes/_eyes.dm
index 8ccfc8b72f61d..3cfb06031cfc3 100644
--- a/code/modules/surgery/organs/internal/eyes/_eyes.dm
+++ b/code/modules/surgery/organs/internal/eyes/_eyes.dm
@@ -134,14 +134,14 @@
 	var/eye_icon = my_head?.eyes_icon || 'icons/mob/human/human_face.dmi'
 	/// DOPPLER SHIFT ADDITION END
 
-	var/mutable_appearance/eye_left = mutable_appearance(eye_icon, "[eye_icon_state]_l", -BODY_LAYER) /// DOPPLER SHIFT EDIT: using eye_icon instead of human_face.dmi
-	var/mutable_appearance/eye_right = mutable_appearance(eye_icon, "[eye_icon_state]_r", -BODY_LAYER) /// DOPPLER SHIFT EDIT: using eye_icon instead of human_face.dmi
+	var/mutable_appearance/eye_left = mutable_appearance(eye_icon, "[eye_icon_state]_l", -eyes_layer) /// DOPPLER SHIFT EDIT: using eye_icon instead of human_face.dmi, eyes_layer instead of BODY_LAYER
+	var/mutable_appearance/eye_right = mutable_appearance(eye_icon, "[eye_icon_state]_r", -eyes_layer) /// DOPPLER SHIFT EDIT: using eye_icon instead of human_face.dmi, eyes_layer instead of BODY_LAYER
 	var/list/overlays = list(eye_left, eye_right)
 
 	var/obscured = parent.check_obscured_slots(TRUE)
 	if(overlay_ignore_lighting && !(obscured & ITEM_SLOT_EYES))
-		overlays += emissive_appearance(eye_left.icon, eye_left.icon_state, parent, -BODY_LAYER, alpha = eye_left.alpha)
-		overlays += emissive_appearance(eye_right.icon, eye_right.icon_state, parent, -BODY_LAYER, alpha = eye_right.alpha)
+		overlays += emissive_appearance(eye_left.icon, eye_left.icon_state, parent, -eyes_layer, alpha = eye_left.alpha) //DOPPLER SHIFT EDIT : using eyes_layer instead of BODY_LAYER
+		overlays += emissive_appearance(eye_right.icon, eye_right.icon_state, parent, -eyes_layer, alpha = eye_right.alpha) //DOPPLER SHIFT EDIT : using eyes_layer instead of BODY_LAYER
 	//var/obj/item/bodypart/head/my_head = parent.get_bodypart(BODY_ZONE_HEAD) /// DOPPLER SHIFT REMOVAL
 	if(my_head)
 		if(my_head.head_flags & HEAD_EYECOLOR)
@@ -719,6 +719,7 @@
 	desc = "These eyes seem to have a large range, but might be cumbersome with glasses."
 	eye_icon_state = "snail_eyes"
 	icon_state = "snail_eyeballs"
+	eyes_layer = ABOVE_BODY_FRONT_HEAD_LAYER // DOPPLER EDIT - Roundstart Snails
 
 /obj/item/organ/internal/eyes/jelly
 	name = "jelly eyes"
diff --git a/code/modules/surgery/organs/internal/tongue/_tongue.dm b/code/modules/surgery/organs/internal/tongue/_tongue.dm
index 54ea59eea6169..786f93263268b 100644
--- a/code/modules/surgery/organs/internal/tongue/_tongue.dm
+++ b/code/modules/surgery/organs/internal/tongue/_tongue.dm
@@ -562,7 +562,10 @@ GLOBAL_LIST_INIT(english_to_zombie, list())
 	color = "#96DB00" // TODO proper sprite, rather than recoloured pink tongue
 	modifies_speech = TRUE
 	voice_filter = "atempo=0.5" // makes them talk really slow
+	liked_foodtypes = VEGETABLES | FRUIT | GROSS | RAW //DOPPLER EDIT - Roundstart Snails - Food Prefs
+	disliked_foodtypes = DAIRY | ORANGES | SUGAR //DOPPLER EDIT: Roundstart Snails - As it turns out, you can't give a snail processed sugar or citrus.
 
+/* DOPPLER EDIT START - Roundstart Snails: Less annoying speech.
 /obj/item/organ/internal/tongue/snail/modify_speech(datum/source, list/speech_args)
 	var/new_message
 	var/message = speech_args[SPEECH_MESSAGE]
@@ -572,6 +575,7 @@ GLOBAL_LIST_INIT(english_to_zombie, list())
 		else
 			new_message += message[i]
 	speech_args[SPEECH_MESSAGE] = new_message
+*/ // DOPPLER EDIT END
 
 /obj/item/organ/internal/tongue/ethereal
 	name = "electric discharger"
diff --git a/code/modules/unit_tests/screenshots/screenshot_humanoids__datum_species_snail.png b/code/modules/unit_tests/screenshots/screenshot_humanoids__datum_species_snail.png
index 11a4cdbf2ddac..2a080e4e19776 100644
Binary files a/code/modules/unit_tests/screenshots/screenshot_humanoids__datum_species_snail.png and b/code/modules/unit_tests/screenshots/screenshot_humanoids__datum_species_snail.png differ
diff --git a/config/game_options.txt b/config/game_options.txt
index e00897226aa05..3f7581c325413 100644
--- a/config/game_options.txt
+++ b/config/game_options.txt
@@ -374,7 +374,7 @@ ROUNDSTART_RACES primitive_felinid
 ROUNDSTART_RACES ethereal
 #ROUNDSTART_RACES jelly
 #ROUNDSTART_RACES abductor
-#ROUNDSTART_RACES snail
+ROUNDSTART_RACES snail
 
 ## Races that are straight upgrades. If these are on expect powergamers to always pick them
 #ROUNDSTART_RACES skeleton
diff --git a/modular_doppler/modular_customization/organs/internal/eyes.dm b/modular_doppler/modular_customization/organs/internal/eyes.dm
new file mode 100644
index 0000000000000..a60cfa0f8a238
--- /dev/null
+++ b/modular_doppler/modular_customization/organs/internal/eyes.dm
@@ -0,0 +1,2 @@
+/obj/item/organ/internal/eyes
+	var/eyes_layer = BODY_LAYER
diff --git a/modular_doppler/modular_species/species_types/snails/icons/bodyparts/snail_bodyparts.dmi b/modular_doppler/modular_species/species_types/snails/icons/bodyparts/snail_bodyparts.dmi
new file mode 100644
index 0000000000000..0b57859dca4ec
Binary files /dev/null and b/modular_doppler/modular_species/species_types/snails/icons/bodyparts/snail_bodyparts.dmi differ
diff --git a/modular_doppler/modular_species/species_types/snails/icons/organs/snail_eyes.dmi b/modular_doppler/modular_species/species_types/snails/icons/organs/snail_eyes.dmi
new file mode 100644
index 0000000000000..aae11d7d5c9a0
Binary files /dev/null and b/modular_doppler/modular_species/species_types/snails/icons/organs/snail_eyes.dmi differ
diff --git a/modular_doppler/modular_species/species_types/snails/icons/organs/snail_heart.dmi b/modular_doppler/modular_species/species_types/snails/icons/organs/snail_heart.dmi
new file mode 100644
index 0000000000000..02f45e9f48676
Binary files /dev/null and b/modular_doppler/modular_species/species_types/snails/icons/organs/snail_heart.dmi differ
diff --git a/modular_doppler/modular_species/species_types/snails/icons/organs/snail_liver.dmi b/modular_doppler/modular_species/species_types/snails/icons/organs/snail_liver.dmi
new file mode 100644
index 0000000000000..ac2034b5ba5a3
Binary files /dev/null and b/modular_doppler/modular_species/species_types/snails/icons/organs/snail_liver.dmi differ
diff --git a/modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi b/modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi
new file mode 100644
index 0000000000000..27efa628b541c
Binary files /dev/null and b/modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi differ
diff --git a/modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi b/modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi
new file mode 100644
index 0000000000000..4b163939a6dd5
Binary files /dev/null and b/modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi differ
diff --git a/modular_doppler/modular_species/species_types/snails/modular_snail.dm b/modular_doppler/modular_species/species_types/snails/modular_snail.dm
new file mode 100644
index 0000000000000..1e86caea374dc
--- /dev/null
+++ b/modular_doppler/modular_species/species_types/snails/modular_snail.dm
@@ -0,0 +1,190 @@
+#define SHELL_TRANSPARENCY_ALPHA 90
+
+/datum/species/snail
+	mutantliver = /obj/item/organ/internal/liver/snail //This is just a better liver to deal with toxins, it's a thematic thing.
+	mutantheart = /obj/item/organ/internal/heart/snail //This gives them the shell buff where they take less damage from behind, and their heart's more durable.
+	exotic_blood = null
+
+/datum/species/snail/on_species_gain(mob/living/carbon/new_snailperson, datum/species/old_species, pref_load)
+	. = ..()
+	new_snailperson.update_icons()
+
+/obj/item/storage/backpack/snail
+	/// Whether or not a bluespace anomaly core has been inserted
+	var/storage_core = FALSE
+	slowdown = 6 // The snail's shell is what's making them slow.
+	obj_flags = IMMUTABLE_SLOW //This should hopefully solve other issues involing it as well.
+	alternate_worn_layer = ABOVE_BODY_FRONT_LAYER //This makes them layer over tails like the cult backpack; some tails really shouldn't appear over them!
+	uses_advanced_reskins = TRUE
+	unique_reskin = list(
+		"Conical Shell" = list(
+			RESKIN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi',
+			RESKIN_ICON_STATE = "coneshell",
+			RESKIN_WORN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi',
+			RESKIN_WORN_ICON_STATE = "coneshell"
+		),
+		"Round Shell" = list(
+			RESKIN_ICON = 'icons/obj/storage/backpack.dmi',
+			RESKIN_ICON_STATE = "snailshell",
+			RESKIN_WORN_ICON = 'icons/mob/clothing/back/backpack.dmi',
+			RESKIN_WORN_ICON_STATE = "snailshell"
+		),
+		"Cinnamon Shell" = list(
+			RESKIN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi',
+			RESKIN_ICON_STATE = "cinnamonshell",
+			RESKIN_WORN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi',
+			RESKIN_WORN_ICON_STATE = "cinnamonshell"
+		),
+		"Caramel Shell" = list(
+			RESKIN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi',
+			RESKIN_ICON_STATE = "caramelshell",
+			RESKIN_WORN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi',
+			RESKIN_WORN_ICON_STATE = "caramelshell"
+		),
+		"Metal Shell" = list(
+			RESKIN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi',
+			RESKIN_ICON_STATE = "mechashell",
+			RESKIN_WORN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi',
+			RESKIN_WORN_ICON_STATE = "mechashell"
+		),
+		"Pyramid Shell" = list(
+			RESKIN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi',
+			RESKIN_ICON_STATE = "pyramidshell",
+			RESKIN_WORN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi',
+			RESKIN_WORN_ICON_STATE = "pyramidshell"
+		),
+		"Ivory Pyramid Shell" = list(
+			RESKIN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi',
+			RESKIN_ICON_STATE = "pyramidshellwhite",
+			RESKIN_WORN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi',
+			RESKIN_WORN_ICON_STATE = "pyramidshellwhite"
+		),
+		"Spiral Shell" = list(
+			RESKIN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi',
+			RESKIN_ICON_STATE = "spiralshell",
+			RESKIN_WORN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi',
+			RESKIN_WORN_ICON_STATE = "spiralshell"
+		),
+		"Ivory Spiral Shell" = list(
+			RESKIN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi',
+			RESKIN_ICON_STATE = "spiralshellwhite",
+			RESKIN_WORN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi',
+			RESKIN_WORN_ICON_STATE = "spiralshellwhite"
+		),
+		"Rocky Shell" = list(
+			RESKIN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi',
+			RESKIN_ICON_STATE = "rockshell",
+			RESKIN_WORN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi',
+			RESKIN_WORN_ICON_STATE = "rockshell"
+		),
+		"Ivory Rocky Shell" = list(
+			RESKIN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_obj.dmi',
+			RESKIN_ICON_STATE = "rockshellwhite",
+			RESKIN_WORN_ICON = 'modular_doppler/modular_species/species_types/snails/icons/shell/shell_mob.dmi',
+			RESKIN_WORN_ICON_STATE = "rockshellwhite"
+		),
+	)
+
+/obj/item/storage/backpack/snail/Initialize(mapload)
+	. = ..()
+	atom_storage.max_total_storage = 30
+
+/obj/item/storage/backpack/snail/build_worn_icon(
+	default_layer = 0,
+	default_icon_file = null,
+	isinhands = FALSE,
+	female_uniform = NO_FEMALE_UNIFORM,
+	override_state = null,
+	override_file = null,
+	mutant_styles = NONE,
+	humie = null,
+)
+
+	var/mutable_appearance/standing = ..()
+	if(storage_core == TRUE)
+		standing.add_filter("bluespace_shell", 2, list("type" = "outline", "color" = COLOR_BLUE_LIGHT, "alpha" = SHELL_TRANSPARENCY_ALPHA, "size" = 1))
+	return standing
+
+/obj/item/storage/backpack/snail/item_interaction(mob/living/user, obj/item/tool, list/modifiers)
+	if(storage_core || !istype(tool, /obj/item/assembly/signaler/anomaly/bluespace))
+		return NONE
+
+	qdel(tool)
+	upgrade_to_bluespace(user)
+	to_chat(user, span_notice("You insert [tool] into your shell, and it starts to glow blue with expanded storage potential!"))
+	return ITEM_INTERACT_SUCCESS
+
+/// Upgrades the storage capacity of the snail shell and gives it a glowy blue outline
+/obj/item/storage/backpack/snail/proc/upgrade_to_bluespace(mob/living/wearer)
+	add_filter("bluespace_shell", 2, list("type" = "outline", "color" = COLOR_BLUE_LIGHT, "size" = 1))
+	playsound(src, 'sound/machines/click.ogg', 50, TRUE)
+	storage_core = TRUE
+	var/old_inventory = atom_storage.return_inv(FALSE)
+	emptyStorage()
+	create_storage(max_specific_storage = WEIGHT_CLASS_GIGANTIC, max_total_storage = 35, max_slots = 30, storage_type = /datum/storage/bag_of_holding)
+	for(var/obj/item/stored_item in old_inventory)
+		atom_storage.attempt_insert(stored_item, override = TRUE, messages = FALSE, force = TRUE)
+	name = "snail shell of holding"
+	update_appearance()
+
+	// Update the worn sprite with the blue outline too if applicable
+	if(isnull(wearer))
+		wearer = loc
+	if(istype(wearer))
+		wearer.update_worn_back()
+
+/datum/species/snail/prepare_human_for_preview(mob/living/carbon/human/snail)
+	snail.dna.features["mcolor"] = "#adaba7"
+	snail.update_body(TRUE)
+
+/datum/species/snail/create_pref_unique_perks()
+	var/list/to_add = list()
+
+	to_add += list(
+		list(
+			SPECIES_PERK_TYPE = SPECIES_POSITIVE_PERK,
+			SPECIES_PERK_ICON = "home",
+			SPECIES_PERK_NAME = "Shellback",
+			SPECIES_PERK_DESC = "Snails have a shell fused to their back. It offers great storage and most importantly gives them 50% brute damage reduction from behind, or while resting. Alt click to change the sprite!",
+		),
+		list(
+			SPECIES_PERK_TYPE = SPECIES_POSITIVE_PERK,
+			SPECIES_PERK_ICON = "wine-glass",
+			SPECIES_PERK_NAME = "Poison Resistance",
+			SPECIES_PERK_DESC = "Snails have a higher tolerance for poison owing to their robust livers.",
+		),
+		list(
+			SPECIES_PERK_TYPE = SPECIES_POSITIVE_PERK,
+			SPECIES_PERK_ICON = "heart",
+			SPECIES_PERK_NAME = "Double Hearts",
+			SPECIES_PERK_DESC = "Snails have two hearts, meaning it'll take more to break theirs.",
+		),
+		list(
+			SPECIES_PERK_TYPE = SPECIES_POSITIVE_PERK,
+			SPECIES_PERK_ICON = "bone",
+			SPECIES_PERK_NAME = "Boneless",
+			SPECIES_PERK_DESC = "Snails are invertebrates, meaning they don't take bone wounds, but are easier to delimb.",
+		),
+		list(
+			SPECIES_PERK_TYPE = SPECIES_NEGATIVE_PERK,
+			SPECIES_PERK_ICON = "crutch",
+			SPECIES_PERK_NAME = "Sheer Mollusk Speed",
+			SPECIES_PERK_DESC = "Snails move incredibly slow while standing. They move much faster while crawling, and can stick to the floors when the gravity is out.",
+		),
+		list(
+			SPECIES_PERK_TYPE = SPECIES_NEGATIVE_PERK,
+			SPECIES_PERK_ICON = "frown",
+			SPECIES_PERK_NAME = "Weak Fighter",
+			SPECIES_PERK_DESC = "Snails punch half as hard as a human.",
+		),
+		list(
+			SPECIES_PERK_TYPE = SPECIES_NEGATIVE_PERK,
+			SPECIES_PERK_ICON = "skull",
+			SPECIES_PERK_NAME = "Salt Weakness",
+			SPECIES_PERK_DESC = "Salt burns snails, and salt piles will block their path.",
+		),
+	)
+
+	return to_add
+
+#undef SHELL_TRANSPARENCY_ALPHA
diff --git a/modular_doppler/modular_species/species_types/snails/organs/snail_heart.dm b/modular_doppler/modular_species/species_types/snails/organs/snail_heart.dm
new file mode 100644
index 0000000000000..7c8362a56cd81
--- /dev/null
+++ b/modular_doppler/modular_species/species_types/snails/organs/snail_heart.dm
@@ -0,0 +1,76 @@
+/obj/item/organ/internal/heart/snail
+	name = "twin gastropod hearts"
+	desc = "A primary heart normally nestled inside a gastropod's shell, and another in the owner's actual chest; necessary to maintain ample bloodflow through essentially two torsos."
+	icon = 'modular_doppler/modular_species/species_types/snails/icons/organs/snail_heart.dmi'
+	icon_state = "heart-snail-on"
+	base_icon_state = "heart-snail"
+	maxHealth = 2 * STANDARD_ORGAN_THRESHOLD // There's two of them. Also, due to the special interaction below, it's best we make sure these aren't easily lost.
+	now_fixed = span_info("Your hearts begin to beat again.") //For the sake of verisimilitude.
+
+	COOLDOWN_DECLARE(shell_effect_cd)
+
+/obj/item/organ/internal/heart/snail/on_mob_insert(mob/living/carbon/organ_owner, special)
+	. = ..()
+	if(!ishuman(organ_owner))
+		return
+
+	if(!issnail(organ_owner)) //This is cleaner than checking for the shell, because there's not really going to be any non-horribly-bugged situation in which a snail will be lacking a shell.
+		return
+
+	var/mob/living/carbon/human/human_owner = organ_owner
+
+	RegisterSignal(human_owner, COMSIG_MOB_APPLY_DAMAGE_MODIFIERS, PROC_REF(modify_damage))
+	RegisterSignal(human_owner, COMSIG_MOB_AFTER_APPLY_DAMAGE, PROC_REF(do_block_effect))
+
+/obj/item/organ/internal/heart/snail/on_mob_remove(mob/living/carbon/organ_owner, special)
+	. = ..()
+	if(!ishuman(organ_owner) || QDELETED(organ_owner))
+		return
+
+	var/mob/living/carbon/human/human_owner = organ_owner
+
+	UnregisterSignal(human_owner, list(COMSIG_MOB_APPLY_DAMAGE_MODIFIERS, COMSIG_MOB_AFTER_APPLY_DAMAGE))
+
+/**
+ * Signal proc for [COMSIG_MOB_APPLY_DAMAGE_MODIFIERS]
+ *
+ * Adds a 0.5 modifier to attacks from the back, code borrowed (wholesale) from the roach heart.
+ */
+/obj/item/organ/internal/heart/snail/proc/modify_damage(mob/living/carbon/human/source, list/damage_mods, damage_amount, damagetype, def_zone, sharpness, attack_direction, obj/item/attacking_item)
+	SIGNAL_HANDLER
+
+	if(!is_blocking(source, damage_amount, damagetype, attack_direction))
+		return
+
+	damage_mods += 0.5
+
+/**
+ * Signal proc for [COMSIG_MOB_AFTER_APPLY_DAMAGE]
+ *
+ * Does a special effect if we blocked damage with our shell.
+ */
+/obj/item/organ/internal/heart/snail/proc/do_block_effect(mob/living/carbon/human/source, damage_dealt, damagetype, def_zone, blocked, wound_bonus, bare_wound_bonus, sharpness, attack_direction, obj/item/attacking_item)
+	SIGNAL_HANDLER
+
+	if(!is_blocking(source, damage_dealt, damagetype, attack_direction))
+		return
+
+	if(COOLDOWN_FINISHED(src, shell_effect_cd))
+		source.visible_message(span_warning("[source]'s shell weathers the blow, absorbing most of the shock!"))
+		playsound(source, 'sound/weapons/parry.ogg', 50, extrarange = SHORT_RANGE_SOUND_EXTRARANGE)
+
+	COOLDOWN_START(src, shell_effect_cd, 3 SECONDS) // Cooldown resets EVERY time we get hit
+
+/// Checks if the passed mob is in a valid state to be blocking damage with the snail shell
+/obj/item/organ/internal/heart/snail/proc/is_blocking(mob/living/carbon/human/blocker, damage_amount, damagetype, attack_direction)
+	if(damage_amount < 5 || damagetype != BRUTE || !attack_direction)
+		return
+	if(!ishuman(blocker) || blocker.stat >= UNCONSCIOUS)
+		return FALSE
+	// No tactical spinning
+	if(HAS_TRAIT(blocker, TRAIT_SPINNING))
+		return FALSE
+	if(blocker.body_position == LYING_DOWN || (blocker.dir & attack_direction))
+		return TRUE
+	return FALSE
+
diff --git a/modular_doppler/modular_species/species_types/snails/organs/snail_liver.dm b/modular_doppler/modular_species/species_types/snails/organs/snail_liver.dm
new file mode 100644
index 0000000000000..392b2a999c6e8
--- /dev/null
+++ b/modular_doppler/modular_species/species_types/snails/organs/snail_liver.dm
@@ -0,0 +1,7 @@
+/obj/item/organ/internal/liver/snail
+	name = "gastropod liver"
+	icon = 'modular_doppler/modular_species/species_types/snails/icons/organs/snail_liver.dmi'
+	icon_state = "liver-snail"
+	desc = "Due to snailfolk evolving in typically poisonous environments such as bogs, their liver has a higher tolerance for poisons compared to most."
+	maxHealth = 1.5 * STANDARD_ORGAN_THRESHOLD
+	toxTolerance = 5 //can shrug off up to 5u of toxins
diff --git a/modular_doppler/modular_species/species_types/snails/snail_bodyparts.dm b/modular_doppler/modular_species/species_types/snails/snail_bodyparts.dm
new file mode 100644
index 0000000000000..9a9c413e0dce8
--- /dev/null
+++ b/modular_doppler/modular_species/species_types/snails/snail_bodyparts.dm
@@ -0,0 +1,35 @@
+// MODULAR SNAIL OVERRIDES
+
+/obj/item/bodypart/head/snail
+	icon_greyscale = BODYPART_ICON_SNAIL
+	bodyshape = BODYSHAPE_HUMANOID
+	head_flags = HEAD_HAIR|HEAD_FACIAL_HAIR|HEAD_EYESPRITES|HEAD_EYECOLOR|HEAD_DEBRAIN
+	eyes_icon = 'modular_doppler/modular_species/species_types/snails/icons/organs/snail_eyes.dmi'
+
+/obj/item/bodypart/chest/snail
+	icon_greyscale = BODYPART_ICON_SNAIL
+	bodyshape = BODYSHAPE_HUMANOID
+
+/obj/item/bodypart/arm/left/snail
+	icon_greyscale = BODYPART_ICON_SNAIL
+	bodyshape = BODYSHAPE_HUMANOID
+	unarmed_damage_low = 1 // Roundstart Snails - Lowest possible punch damage. if this is set to 0, punches will always miss.
+	unarmed_damage_high = 5 // Roundstart Snails - A Bit More damage.
+
+/obj/item/bodypart/arm/right/snail
+	icon_greyscale = BODYPART_ICON_SNAIL
+	bodyshape = BODYSHAPE_HUMANOID
+	unarmed_damage_low = 1
+	unarmed_damage_high = 5
+
+/obj/item/bodypart/leg/left/snail
+	icon_greyscale = BODYPART_ICON_SNAIL
+	bodyshape = BODYSHAPE_HUMANOID
+	unarmed_damage_low = 1.
+	unarmed_damage_high = 5
+
+/obj/item/bodypart/leg/right/snail
+	icon_greyscale = BODYPART_ICON_SNAIL
+	bodyshape = BODYSHAPE_HUMANOID
+	unarmed_damage_low = 1
+	unarmed_damage_high = 5
diff --git a/tgstation.dme b/tgstation.dme
index 68e6c9fb15a42..1d03564abb18f 100644
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -416,6 +416,7 @@
 #include "code\__DEFINES\~doppler_defines\logging.dm"
 #include "code\__DEFINES\~doppler_defines\manufacturer_strings.dm"
 #include "code\__DEFINES\~doppler_defines\mobfactions.dm"
+#include "code\__DEFINES\~doppler_defines\mobs.dm"
 #include "code\__DEFINES\~doppler_defines\mutant_variations.dm"
 #include "code\__DEFINES\~doppler_defines\obj_flags_doppler.dm"
 #include "code\__DEFINES\~doppler_defines\organ_slots.dm"
@@ -6713,6 +6714,7 @@
 #include "modular_doppler\modular_customization\organs\external\tail.dm"
 #include "modular_doppler\modular_customization\organs\external\wings.dm"
 #include "modular_doppler\modular_customization\organs\internal\ears.dm"
+#include "modular_doppler\modular_customization\organs\internal\eyes.dm"
 #include "modular_doppler\modular_customization\preferences\antennae.dm"
 #include "modular_doppler\modular_customization\preferences\body_marking_lizard.dm"
 #include "modular_doppler\modular_customization\preferences\body_marking_moth.dm"
@@ -6781,6 +6783,10 @@
 #include "modular_doppler\modular_species\species_types\primitive_demihuman\primitive_demihuman.dm"
 #include "modular_doppler\modular_species\species_types\slugcats\slugcat.dm"
 #include "modular_doppler\modular_species\species_types\slugcats\slugcat_bodyparts.dm"
+#include "modular_doppler\modular_species\species_types\snails\modular_snail.dm"
+#include "modular_doppler\modular_species\species_types\snails\snail_bodyparts.dm"
+#include "modular_doppler\modular_species\species_types\snails\organs\snail_heart.dm"
+#include "modular_doppler\modular_species\species_types\snails\organs\snail_liver.dm"
 #include "modular_doppler\modular_traits\code\neutral.dm"
 #include "modular_doppler\modular_traits\code\organs.dm"
 #include "modular_doppler\modular_weapons\code\gunsets.dm"