Tax Fight!

One brutal puzzle a day. Sharpen your brain in minutes.

Dragonsweeper is a free strategy puzzle game that blends classic Minesweeper gameplay with RPG elements. Clear mines, defeat monsters, level up, and embark on an epic adventure to slay evil dragons!

Turn abstract probability and statistics concepts into visible, easy-to-understand content with fun interactive visual demos. Master core probabilistic thinking, and dive deep into classic theories including the Law of Large Numbers, Bayes' Theorem,

Tap into the full power of large language models for a one-of-a-kind AI-powered survival adventure.

「哇声片场」是一款融合大模型技术的仿真配音与声音创作工具。

cpstest is a web-based tool for testing mouse click speed, evaluating concentration, measuring reaction speed, and providing fun, focused training.