diff --git a/docs/fleet_spec.md b/docs/fleet_spec.md
index ff437359fa..30f9bd9894 100644
--- a/docs/fleet_spec.md
+++ b/docs/fleet_spec.md
@@ -79,6 +79,14 @@ spec:
   # The name of the fleet to allocate from. Must be an existing Fleet in the same namespace
   # as this FleetAllocation
   fleetName: fleet-example
+  # Custom metadata that is added to game server status in the moment of allocation
+  # You can use this to tell the server necessary session data
+  # ⚠️⚠️⚠️ **This is currently a development feature and has not been released** ⚠️⚠️⚠️
+  metadata:
+    labels:
+      mode: deathmatch
+    annotations:
+      map:  garden22
 ```
 
 We recommend using `metadata > generateName`, to declare to Kubernetes that a unique
@@ -88,3 +96,6 @@ The `spec` field is the actual `FleetAllocation` specification and it is compose
 
 - `fleetName` is the name of an existing Fleet. If this doesn't exist, and error will be returned
   when the `FleetAllocation` is created
+- `metadata` is an optional list of custom labels and/or annotations that will be used to patch 
+  the game server's metadata in the moment of allocation. 
+  ⚠️⚠️⚠️ **This is currently a development feature and has not been released** ⚠️⚠️⚠️
diff --git a/examples/fleetallocation.yaml b/examples/fleetallocation.yaml
index e5d064d7d6..ae2c654e6d 100644
--- a/examples/fleetallocation.yaml
+++ b/examples/fleetallocation.yaml
@@ -28,4 +28,11 @@ metadata:
 spec:
   # The name of the fleet to allocate from. Must be an existing Fleet in the same namespace
   # as this FleetAllocation
-  fleetName: fleet-example
\ No newline at end of file
+  fleetName: fleet-example
+  # Custom metadata that is added to game server status in the moment of allocation
+  # You can use this to tell the server necessary session data
+  metadata:
+    labels:
+      mode: deathmatch
+    annotations:
+      map:  garden22
diff --git a/pkg/apis/stable/v1alpha1/fleetallocation.go b/pkg/apis/stable/v1alpha1/fleetallocation.go
index 47d5b8a1ef..4a12c504fb 100644
--- a/pkg/apis/stable/v1alpha1/fleetallocation.go
+++ b/pkg/apis/stable/v1alpha1/fleetallocation.go
@@ -42,7 +42,14 @@ type FleetAllocationList struct {
 // FleetAllocationSpec is the spec for a Fleet
 // Allocation
 type FleetAllocationSpec struct {
-	FleetName string `json:"fleetName"`
+	FleetName string              `json:"fleetName"`
+	MetaPatch FleetAllocationMeta `json:"metadata,omitempty"`
+}
+
+// FleetAllocationMeta is the metadata used to patch the GameServer metadata on allocation
+type FleetAllocationMeta struct {
+	Labels      map[string]string `json:"labels,omitempty"`
+	Annotations map[string]string `json:"annotations,omitempty"`
 }
 
 // FleetAllocationStatus will contain the
diff --git a/pkg/apis/stable/v1alpha1/zz_generated.deepcopy.go b/pkg/apis/stable/v1alpha1/zz_generated.deepcopy.go
index 903c0a8fb3..6fd9485633 100644
--- a/pkg/apis/stable/v1alpha1/zz_generated.deepcopy.go
+++ b/pkg/apis/stable/v1alpha1/zz_generated.deepcopy.go
@@ -57,7 +57,7 @@ func (in *FleetAllocation) DeepCopyInto(out *FleetAllocation) {
 	*out = *in
 	out.TypeMeta = in.TypeMeta
 	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
-	out.Spec = in.Spec
+	in.Spec.DeepCopyInto(&out.Spec)
 	in.Status.DeepCopyInto(&out.Status)
 	return
 }
@@ -113,9 +113,40 @@ func (in *FleetAllocationList) DeepCopyObject() runtime.Object {
 	return nil
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *FleetAllocationMeta) DeepCopyInto(out *FleetAllocationMeta) {
+	*out = *in
+	if in.Labels != nil {
+		in, out := &in.Labels, &out.Labels
+		*out = make(map[string]string, len(*in))
+		for key, val := range *in {
+			(*out)[key] = val
+		}
+	}
+	if in.Annotations != nil {
+		in, out := &in.Annotations, &out.Annotations
+		*out = make(map[string]string, len(*in))
+		for key, val := range *in {
+			(*out)[key] = val
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new FleetAllocationMeta.
+func (in *FleetAllocationMeta) DeepCopy() *FleetAllocationMeta {
+	if in == nil {
+		return nil
+	}
+	out := new(FleetAllocationMeta)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *FleetAllocationSpec) DeepCopyInto(out *FleetAllocationSpec) {
 	*out = *in
+	in.MetaPatch.DeepCopyInto(&out.MetaPatch)
 	return
 }
 
diff --git a/pkg/fleetallocation/controller.go b/pkg/fleetallocation/controller.go
index db9740a40f..0b597553ef 100644
--- a/pkg/fleetallocation/controller.go
+++ b/pkg/fleetallocation/controller.go
@@ -134,7 +134,7 @@ func (c *Controller) creationMutationHandler(review admv1beta1.AdmissionReview)
 		return review, errors.Wrapf(err, "error retrieving fleet %s", fa.Name)
 	}
 
-	gs, err := c.allocate(fleet)
+	gs, err := c.allocate(fleet, &fa.Spec.MetaPatch)
 	if err != nil {
 		review.Response.Allowed = false
 		review.Response.Result = &metav1.Status{
@@ -250,7 +250,7 @@ func (c *Controller) mutationValidationHandler(review admv1beta1.AdmissionReview
 }
 
 // allocate allocated a GameServer from a given Fleet
-func (c *Controller) allocate(f *stablev1alpha1.Fleet) (*stablev1alpha1.GameServer, error) {
+func (c *Controller) allocate(f *stablev1alpha1.Fleet, fam *stablev1alpha1.FleetAllocationMeta) (*stablev1alpha1.GameServer, error) {
 	var allocation *stablev1alpha1.GameServer
 	// can only allocate one at a time, as we don't want two separate processes
 	// trying to allocate the same GameServer to different clients
@@ -280,6 +280,10 @@ func (c *Controller) allocate(f *stablev1alpha1.Fleet) (*stablev1alpha1.GameServ
 	gsCopy := allocation.DeepCopy()
 	gsCopy.Status.State = stablev1alpha1.Allocated
 
+	if fam != nil {
+		c.patchMetadata(gsCopy, fam)
+	}
+
 	gs, err := c.gameServerGetter.GameServers(f.ObjectMeta.Namespace).Update(gsCopy)
 	if err != nil {
 		return gs, errors.Wrapf(err, "error updating GameServer %s", gsCopy.ObjectMeta.Name)
@@ -288,3 +292,25 @@ func (c *Controller) allocate(f *stablev1alpha1.Fleet) (*stablev1alpha1.GameServ
 
 	return gs, nil
 }
+
+// patch the labels and annotations of an allocated GameServer with metadata from a FleetAllocation
+func (c *Controller) patchMetadata(gs *stablev1alpha1.GameServer, fam *stablev1alpha1.FleetAllocationMeta) {
+	// patch ObjectMeta labels
+	if fam.Labels != nil {
+		if gs.ObjectMeta.Labels == nil {
+			gs.ObjectMeta.Labels = make(map[string]string, len(fam.Labels))
+		}
+		for key, value := range fam.Labels {
+			gs.ObjectMeta.Labels[key] = value
+		}
+	}
+	// apply annotations patch
+	if fam.Annotations != nil {
+		if gs.ObjectMeta.Annotations == nil {
+			gs.ObjectMeta.Annotations = make(map[string]string, len(fam.Annotations))
+		}
+		for key, value := range fam.Annotations {
+			gs.ObjectMeta.Annotations[key] = value
+		}
+	}
+}
diff --git a/pkg/fleetallocation/controller_test.go b/pkg/fleetallocation/controller_test.go
index 4c11b6a0c5..55702e3387 100644
--- a/pkg/fleetallocation/controller_test.go
+++ b/pkg/fleetallocation/controller_test.go
@@ -144,6 +144,10 @@ func TestControllerAllocate(t *testing.T) {
 	f, gsSet, gsList := defaultFixtures(4)
 	c, m := newFakeController()
 	n := metav1.Now()
+	l := map[string]string{"mode": "deathmatch"}
+	a := map[string]string{"map": "searide"}
+	fam := &v1alpha1.FleetAllocationMeta{Labels: l, Annotations: a}
+
 	gsList[3].ObjectMeta.DeletionTimestamp = &n
 
 	m.AgonesClient.AddReactor("list", "fleets", func(action k8stesting.Action) (bool, runtime.Object, error) {
@@ -172,25 +176,35 @@ func TestControllerAllocate(t *testing.T) {
 	_, cancel := agtesting.StartInformers(m)
 	defer cancel()
 
-	gs, err := c.allocate(f)
+	gs, err := c.allocate(f, fam)
 	assert.Nil(t, err)
 	assert.Equal(t, v1alpha1.Allocated, gs.Status.State)
 	assert.True(t, updated)
+	for key, value := range fam.Labels {
+		v, ok := gs.ObjectMeta.Labels[key]
+		assert.True(t, ok)
+		assert.Equal(t, v, value)
+	}
+	for key, value := range fam.Annotations {
+		v, ok := gs.ObjectMeta.Annotations[key]
+		assert.True(t, ok)
+		assert.Equal(t, v, value)
+	}
 
 	updated = false
-	gs, err = c.allocate(f)
+	gs, err = c.allocate(f, nil)
 	assert.Nil(t, err)
 	assert.Equal(t, v1alpha1.Allocated, gs.Status.State)
 	assert.True(t, updated)
 
 	updated = false
-	gs, err = c.allocate(f)
+	gs, err = c.allocate(f, nil)
 	assert.Nil(t, err)
 	assert.Equal(t, v1alpha1.Allocated, gs.Status.State)
 	assert.True(t, updated)
 
 	updated = false
-	_, err = c.allocate(f)
+	_, err = c.allocate(f, nil)
 	assert.NotNil(t, err)
 	assert.Equal(t, ErrNoGameServerReady, err)
 	assert.False(t, updated)
@@ -230,7 +244,7 @@ func TestControllerAllocateMutex(t *testing.T) {
 	allocate := func() {
 		defer wg.Done()
 		for i := 1; i <= 10; i++ {
-			_, err := c.allocate(f)
+			_, err := c.allocate(f, nil)
 			assert.Nil(t, err)
 		}
 	}