Horny Sweeper is a turn-based strategy game. The player begins the game with Kazuya and Henry alone, but afterwards more and more girls join the party. Most of the battles are against government parties, which consist of various character classes (soldiers, mages, robots, etc.). The player's party also acquires different talents over the course of the game: a healer, a shotgun-wielding character, etc. When characters attack each other, an animated sequence is displayed.