Wormate.io is a real-time, battle-arena game in the slither-snake category. The player's objective is to raise a worm to the largest size possible by feeding it a wide range of desserts in an arena and protecting it against other worms. Their success is based on the amount of time they can keep their worm in the arena before it dies and its final weight at the time of its death.
Desserts in the arena, such as cake slices, cookies, donuts, fruits, gummy bears, hard candy, gingerbread and taffy, appear and disappear randomly. Additionally, any time a worm dies from slithering into another worm, it leaves behind all the desserts it ate prior to the event.
The arena in Wormate.io also contains power-ups that help the player keep their worm alive longer, including a magnet that gives the worm the ability to absorb snacks from a distance in front of it, a speed boost that makes the worm slither faster and a question mark that provides a random boost ability. The game also features a multiplier booster that increases the amount of nourishment the worm receives from a single snack.