Has-Been Heroes is a challenging lane-based roguelike game developed by Frozenbyte. It is a game of strategy and action where players must escort the King's twin princesses to school. The game features three characters that players must control during the journey. The focus is on coordinating melee attacks, managing cooldowns, and combining hundreds of different spells to create devastating combo effects. Players must defeat an endless army of undead summoned in their path by the Great Ghoul.

The game features irreverent humor, expanding world maps, and increasing levels of difficulty, compounded by the specter of permadeath. The massive quantity and randomness of spells and items, as well as additional unlockable heroes, allow for thousands of new experiences, forcing players to change their playstyle each time they start a new game. With randomized maps, spells, items, and enemies, each run is different, making the game more challenging and exciting.