Remember Tinymania's mini-game mash-up Digital Genius? You know, the one where you had to out-geek MENSA? Well, one of those mini-games - Mathteroids - was so popular that the site has released it as a standalone experience.

And no wonder. It's Asteroids, but instead of zapping space rocks into several smaller pieces by aiming and clicking, you do so by solving maths equations.

Movement falls to the mouse. "Shooting" is the province of the number keys.

Masterfully simple. Enjoy.

Play Mathteroids