Doomsday Racers is a single-player, keyboard-controlled racing game that also supports joystick input.
The game takes place in a post-apocalyptic world, where cars can drive indefinitely without taking damage and there are no gears to contend with. If the player gets stuck behind an obstacle, they must press SPACE to reposition their car on the track. The game features three race modes: Tournament, Quick Race, and Time Trial.
The races take place around two courses: Red Desert and Space Dome. For Quick Race and Time Trial modes, these courses are divided into stages, with only a few stages of Red Desert initially available. As players progress through the tournament mode, new stages become unlocked.
The tournament mode starts with the player racing in the Neutron league and progresses to the Gamma and then Galactic leagues. Each tournament consists of four races, taking place on sections from either course. The game offers a range of cars to choose from at the start, including Warrior, Enforcer, MODGT, Raider, Fusion, and Evo, as well as Interceptor and Xtreme.