Prison Boss VR

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,

A delightfully mindless spacebar clicking idle game. The more you click, the more you zone out—perfect for curing boredom.

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

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

Simple online tests for reaction time, memory, and focus

自动识别公开牌面、追踪剩余牌，支持斗地主、跑得快、掼蛋，提供 iOS 与 Android 版本。