The game of Shlongg features two different styles of gameplay. The first is a breakout style battle where a ball and ship are used to smash various aliens, larva and breakable objects. The second is a race through a 3D inter-dimensional tunnel, collecting power ups while dodging enemies and mines. Each part represents a truly unique concept that helps tie together the progression of the game.

Players choose one of three different ships to battle their way through over one hundred levels and as many tunnels. Along the way players will face a dozen kinds of enemies and upgrade their abilities using sixteen types of power ups. The advanced physics and unique hybrid style of the game create a completely new experience. The full version also contains the game's level editor allowing for the creation of completely new missions.