Just Cause 3

A fun, free song-guessing mini-game with one new track every day—guess the song just from its intro!

Spoiler-free hints for all seven daily prompts — just enough light to find your own answer.

Web-based Sudoku game: just open the website to start playing.

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。