Clash'N Slash is a top-down, single screen game where the player needs to protect the planet from an onslaught of enemies by using a spaceship that shoots the enemies. There are different weapons and upgrades for the planet, for the spaceship and for the weapons that help to protect the planet and attack the enemies easily. Power-ups are dropped to use against enemies. There are 60 levels, 13 bonus levels and bosses. The game is entirely controlled by the mouse. Clicking and pointing is used to shoot and the ship will also slightly move in that direction, but it always stays in the vicinity of the planet.