Voxatron

Voxatron is an action/adventure game set in a world completely made of tiny cubes that can be built, blasted to smithereens, and collapse in per-voxel detail. Watch voxel snow settle on the scene perfectly, shoot the voxel leaves off a voxel tree or cut through the trunk and watch the whole thing collapse into voxels. There are lots of voxels in this game.