Tux, of Math Command (TuxMath, for short) is an open source arcade-style video game for learning arithmetic, initially created for Linux.

Since 1.7.0 the game also includes a multiplayer mode and Factor-fraction activity called Factoroids.

Being an open source project, multi-platform support for Linux, Windows, Mac OS X, BeOS and others is available.

Included is also "Factoroids", a clone of classic Atari video game Asteroids, modified to be an activity to train factorization.

Originally written in C language and based on the SDL library, TuxMath has been rewritten in JavaScript in 2022, allowing it to be played from a web browser or from a smartphone.