I am grateful to many people for inspirations of ideas and technical supports. In particular,
- GameMasterTips - For ideas in Cipher.
- rnightshroud - For ideas in RNS Riddle and technical supports on building this website.
- Emoon - For technical help on setting up the Discord server and the bot Riddler.
- Kobe Li - For ideas in The String Harmony and testing the levels in Combinats.
- SQ - For testing the levels and the idea of a particular level.
- Tom and romanmutin - For the idea of Level 16.
- Brad Zhao - For finding a game-breaking bug in Level 30 and many useful suggestions to improve the game.
- Zhiyuan Chen - For introducing MkDocs to me.
Thank you very much!