The gameplay for Injustice: Gods Among Us involves one-on-one matches within a two-dimensional plane, although characters and backgrounds are rendered in a three-dimensional fashion. Contrarily to the classic scheme of multiple rounds with health bars refilling in between, Injustice follows a scheme similar to the Killer Instinct series, where each match consists of a single round, in which each player has two health bars.[10] The game uses a four-button control layout of light, medium, and heavy attacks, alongside a "character trait" button that activates a unique ability or attack designed to showcase each character.[11] For instance, Superman's trait provides a temporary stat boost, while Batman's trait summons a swarm of robotic bats.