No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. Reviews and prices only.

Squirrel with a Gun

Squirrel, meet gun. As the neighborhood’s most obnoxious rodent, develop a knack for crime and mayhem in pursuit of golden acorns in this nutty sandbox shooter and puzzle platformer. Fight tooth, claw, and gun to escape a secret underground facility and defeat the Agents.