Tux4ME is a collection of lightweight, web‑based brain‑training mini‑games (e.g., reasoning with shapes, memory‑math combos, Stroop‑style tasks, odd‑one‑out detection) designed to improve various cognitive skills such as memory, attention, mental flexibility, and speed. It targets students, educators, and anyone looking for short, gamified exercises to boost mental ability, and was originally created by the Tux4Kids organization for Google Summer of Code 2015.