價格：免費
檔案大小：1.3 MB
版本需求：需要 iOS 8.3 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
How fast is your reaction speed? This is one of the world hardest color game with very fast speed on testing your reflex skill! Download world hardest color game for free and challenge your limits with your friends!
支援平台：iPhone, iPad