Xbox Live Indie Games developer iamrece has launched Hypotenuse, a minimalist wave-based beat-'em-up for the Xbox 360.

Hypotenuse puts you in control of a rectangular ninja who must fend off an endless stream of fellow rectangles. The difficulty ramps up quickly, and though the controls and aesthetic are simple, slicing up your rectangular enemies remains satisfying throughout.

Hypotenuse is priced at 80 Microsoft points ($1).