Hero Fighting takes place in a post-apocalyptic world where the universe has collapsed, leaving only chaos and floating lava. In this unfamiliar and chaotic world, familiar heroes from different eras have been magically reborn. With more than 20 diverse heroes to choose from, including iconic figures like Li Bai, Einstein, and Santa Claus, players must fight for survival using bizarre weapons like salted fish, toilet suction, and kitchen knives.

The game offers two modes: Death Mode, where players control 10 heroes and level up by eating their own color beans or killing opponents, and Extreme Mode, where heroes start at level one and face more challenging gameplay. With joystick controls for movement and attack, players can also utilize special skills unique to each hero, such as Green Hat King's hat forgiveness ability or Einstein's atomic bomb.

To succeed in Hero Fighting, players must strategically upgrade their heroes, observe opponents' levels, and make use of special skills with cooling times. Whether it's eating peas to level up or recovering health by defeating opponents, survival in this chaotic world requires quick thinking and skillful execution.