Worms is a turn-based strategy game. It features up to 4 teams of 4 worms, aiming to destroy the others on a generated terrain. Each worm has 100 hitpoints and dies when his hit points fall to 0. Upon death, a worm explodes, causing damage to everyone around.
Gameplay is turn-based. Each turn, the player can control one specific worm from his team. The worm can crawl left and right or jump. However, there is a time limit to make a move; also, if the worm falls from a great height, it loses health and the turn ends immediately; and if a worm falls into water or offscreen, it dies. Each turn, a worm can also make a single attack: the player can aim up and down, choose a weapon and then fire it. After attacking, the turn ends.
There are many weapons available - the standard ones include bazookas (which are affected by the wind settings and gravity) and grenades. Other options include Fire Punches, dynamite, airstrikes, and utilities like ropes and girders.
There are 10 styles of terrain to choose from, ranging from forests and deserts to Candy land and even the moon with its own special effects. Shells can leave craters in the ground, and tunnels can be formed in complex environments.