Stop the enemies from getting to the other side of the map! Build towers in a maze to shoot them down.

Use the mouse to click the Build Tower buttons, and then click again to build them in the game area.

A colourful and eccentric game, Oh No, Cowboy Vampires tries to do something different in the Tower Defence genre. The tone of the game is decidedly silly; it includes Cowboy Vampires, dinosaurs that steal sunglasses, and the Ghost of the Moon. On the gameplay side, players must actually design the maze the enemies walk around themselves, which adds a geometric puzzle element to the game.