diff --git a/README.md b/README.md
index 9b57c4d..0f0ecbb 100644
--- a/README.md
+++ b/README.md
@@ -4,13 +4,46 @@
 
 NES Emulator written by Rust
 
-## Screenshot
+| Super Mario Bros. | Donkey Kong |
+| - | - |
+| ![mario-gif](https://user-images.githubusercontent.com/4300987/64512802-1bc8bd00-d322-11e9-8a70-26df62bb5ee1.gif) | ![donkey-gif](https://user-images.githubusercontent.com/4300987/64512801-1bc8bd00-d322-11e9-9e6c-0a149fb05c1b.gif) |
+
+## Feature & Known Issue
+
+- [x] CPU
+  - [x] Register
+  - [x] Interrupt
+  - [x] Official opcode
+  - [x] Unofficial opcode
+- [x] Cassette(Mapper)
+  - [x] NROM(Mapper0)
+  - [ ] UNROM
+  - [ ] MMC1
+  - [ ] MMC3
+- [x] PPU
+  - [x] OAM DMA
+  - [x] BG
+    - [x] Nametable Mirroring
+    - [x] Scroll
+  - [x] Sprite
+    - [x] 8*8
+    - [x] 8*16
+    - [ ] Sprite 0 hit bug(#40)
+- [x] PAD
+  - [x] Joypad1
+- [ ] APU
+  - [ ] Puluse Wave1
+  - [ ] Puluse Wave2
+  - [ ] Tri Wave
+  - [ ] Noise
+  - [ ] DMC
+
+## Screenshot (Operation checked)
 
 ### Super Mario Bros.
 
 ![mario](https://raw.githubusercontent.com/kamiyaowl/rust-nes-emulator/master/screenshot/mario.bmp)
 
-Work In Progress...
 
 ### Donkey Kong
 
@@ -52,4 +85,4 @@ Thank you for the wonderful !
 | path | from | url |
 | ---- | ---- | --- |
 | roms/other/hello.nes | コンソールゲーム機研究所 | http://hp.vector.co.jp/authors/VA042397/nes/sample.html |
-| roms/nes-test-roms | christopherpow/nes-test-roms - GitHub | https://github.com/christopherpow/nes-test-roms |
+| roms/nes-test-roms | christopherpow/nes-test-roms - GitHub | https://github.com/christopherpow/nes-test-roms |
\ No newline at end of file
diff --git a/src/nes/ppu.rs b/src/nes/ppu.rs
index 43196a3..c85a31c 100644
--- a/src/nes/ppu.rs
+++ b/src/nes/ppu.rs
@@ -483,7 +483,7 @@ impl Ppu {
             // 描画範囲内(y+1)~(y+1+ 8or16)
             if (sprite_y < sprite_begin_y) && (sprite_begin_y <= sprite_end_y) {
                 // sprite 0 hitフラグ(1lineごとに処理しているので先に立ててしまう)
-                let is_zero_hit_delay = sprite_begin_y > (sprite_end_y - 2); //1lineずつ処理だとマリオ等早く検知しすぎるので TODO: #40
+                let is_zero_hit_delay = sprite_begin_y > (sprite_end_y - 3); //1lineずつ処理だとマリオ等早く検知しすぎるので TODO: #40
                 if sprite_index == 0 && is_zero_hit_delay {
                     system.write_ppu_is_hit_sprite0(true);
                     debugger_print!(PrintLevel::DEBUG, PrintFrom::PPU, format!("sprite zero hit"));