Hero X is an isometric third-person game strongly influenced by the aesthetics and theme of comic books. The objectives of the game are to complete missions in the open free-roaming area around Smalltown. The game's action involves direct combat and the use of 50 superpowers selected by the player, including force fields, freeze rays, mind control and super strength. Players select the appearance of their chosen hero and an initial three powers, with further powers unlocked by completing missions throughout the game.