diff --git a/docs/en/case.md b/docs/en/case.md
index 2368df81..006b3d4e 100644
--- a/docs/en/case.md
+++ b/docs/en/case.md
@@ -92,7 +92,7 @@
 
 * [M5Stack_MMD](https://github.com/MhageGH/M5Stack_MMD) - 3D rendering by M5Stack
 
-* [M5Stack PC-8801 エミュレータ！](http://shikarunochi.matrix.jp/?p=2964) - PC-8801 emulator
+* [M5Stack PC-8801 Emulator!](http://shikarunochi.matrix.jp/?p=2964) - PC-8801 emulator
 
 * [StickWatch](https://github.com/eggfly/StickWatch) - M5Stick watch
 
@@ -112,4 +112,6 @@
 
 * [M5Stack-Cam-Viewer](https://github.com/moononournation/M5Stack-Cam-Viewer) - Arduino M5Cam viewer for M5Stack
   
-* [M5Stack_lifegame](https://gist.github.com/shioken/fa2c3f5923170d86dd358b313d6ab244) - Life game
\ No newline at end of file
+* [M5Stack_lifegame](https://gist.github.com/shioken/fa2c3f5923170d86dd358b313d6ab244) - Life game
+
+* [m5squeak](https://github.com/EiichiroIto/m5squeak) - m5squeak is a squeak implementation of m5stack microcontroller
\ No newline at end of file
diff --git a/docs/ja/case.md b/docs/ja/case.md
index 73997379..11798d51 100644
--- a/docs/ja/case.md
+++ b/docs/ja/case.md
@@ -119,6 +119,9 @@
 - [M5Stack_WebRadio_Avator](https://github.com/robo8080/M5Stack_WebRadio_Avator)
   - M5StackでAvatar表示付きWebRadio
 
+- [M5Stack_Sokoban](https://github.com/robo8080/M5Stack_Sokoban)
+  - M5Stackで倉庫番！
+
 - [M5Bala_Avatar](https://github.com/robo8080/M5Bala_Avatar)
   - Avatar with M5Bala
 
@@ -168,4 +171,35 @@
   - Arduino M5Cam viewer for M5Stack
   
 - [M5Stack_lifegame](https://gist.github.com/shioken/fa2c3f5923170d86dd358b313d6ab244)
-  - ライフゲームアプリ
\ No newline at end of file
+  - ライフゲームアプリ
+
+- [m5squeak](https://github.com/EiichiroIto/m5squeak)
+  - squeakのM5Stack上の実装
+
+## Web site
+
+### Espressif 公式
+
+- [Espressif](https://www.espressif.com/)
+- [ESP32 Datasheet](https://www.espressif.com/en/support/download/overview)
+- [ESP32 tools](https://www.espressif.com/en/support/download/other-tools)
+- [arduino-esp32](https://github.com/espressif/arduino-esp32)
+- [esp-idf](https://github.com/espressif/esp-idf)
+- [esp-idf guide](https://docs.espressif.com/projects/esp-idf/en/latest/)
+- [esp-mdf](https://github.com/espressif/esp-mdf)
+- [esp-mdf guide](https://docs.espressif.com/projects/esp-mdf/en/latest/)
+- [esp-adf](https://github.com/espressif/esp-adf)
+- [esp-adf guide](https://docs.espressif.com/projects/esp-adf/en/latest/)
+- [esp-iot-solution](https://github.com/espressif/esp-iot-solution)
+- [esp-iot-solution guide](https://github.com/espressif/esp-iot-solution/blob/master/documents/readme_en.md)
+
+### メイカーズ
+
+- [Switch Science Magazine!](http://mag.switch-science.com/)
+- [mgo-tec電子工作](https://www.mgo-tec.com/)
+- [Watako-Lab.](http://watako-lab.com/)
+- [Ambient](https://ambidata.io/tag/m5stack/)
+- [M5Stack User Group Japan @facebook](https://www.facebook.com/groups/M5Stack-User-Group-Japan-154504605228235/)
+- [M5Stack User Group Japan @connpass](https://m5stack.connpass.com/)
+- [Attic or Garret](http://itoi.jp/M5Stack.html?fbclid=IwAR1S45pVpY96XtrgGiszuohnuVluvN8P7_t68WtJEl_saWjBAov7mAG7jso)
+- [9 DoF sensor fusion](https://github.com/kriswiner/MPU6050/wiki/Affordable-9-DoF-Sensor-Fusion)
\ No newline at end of file
diff --git a/docs/zh_CN/case.md b/docs/zh_CN/case.md
index 14bd772e..4df4235a 100644
--- a/docs/zh_CN/case.md
+++ b/docs/zh_CN/case.md
@@ -90,7 +90,7 @@
 
 * [M5Stack_MMD](https://github.com/MhageGH/M5Stack_MMD) - 3D rendering by M5Stack
 
-* [M5Stack PC-8801 エミュレータ！](http://shikarunochi.matrix.jp/?p=2964) - PC-8801 emulator
+* [M5Stack PC-8801 Emulator!](http://shikarunochi.matrix.jp/?p=2964) - PC-8801 emulator
 
 * [StickWatch](https://github.com/eggfly/StickWatch) - M5Stick watch
 
@@ -110,4 +110,6 @@
 
 * [M5Stack-Cam-Viewer](https://github.com/moononournation/M5Stack-Cam-Viewer) - Arduino M5Cam viewer for M5Stack
   
-* [M5Stack_lifegame](https://gist.github.com/shioken/fa2c3f5923170d86dd358b313d6ab244) - Life game
\ No newline at end of file
+* [M5Stack_lifegame](https://gist.github.com/shioken/fa2c3f5923170d86dd358b313d6ab244) - Life game
+
+* [m5squeak](https://github.com/EiichiroIto/m5squeak) - m5squeak is a squeak implementation of m5stack microcontroller
\ No newline at end of file