Infection is an abstract strategy board game that involves play by two parties on a seven-by-seven square grid. The object of the game is to make your pieces constitute a majority of the pieces on the board at the end of the game, by converting as many of your opponents pieces as possible.
Based on an early 90s arcade game.
Infection is also known by such names as Ataxx, Boogers, Slime Wars and Frog Cloning.