Blast Corps is a single-player action video game. The player controls vehicles to destroy buildings, farms, and other structures in the path of a runaway nuclear missile carrier. The player fails if the carrier collides with an object. The eight demolition vehicles vary in the way they clear structures: the bulldozer rams, the dump truck drifts, the lightweight buggy crashes from higher ground, the tricycle shoots missiles, another truck presses outwards from its sides, and robot mechs tumble and stomp from the land and the air. The player must transfer between vehicles and other machinery to solve puzzles. Objectives include transporting timed explosive crates and bridging gaps. The game's puzzles increase in difficulty[2] as the player progresses through its 57 levels.[3]
The world is portrayed from a three-quarters overhead view. The player can adjust the game's viewable perspective with zoom and horizontal panning functions.[2] Pop-up hints will guide the player in the early stages of the game,[3] and other characters audibly encourage the player as each level wears on. The cheery soundtrack increases in tempo as the level's timer runs low.[2] After completing a level, the player can return to explore without a time limit.[4] By finding secrets and activating lights throughout the level, the player raises their score and final medal ranking. There are also secret levels hidden throughout the game, where the player completes objectives against the clock. The player can compete against a ghost copy of their previous path through a level. There are no settings to change the game's difficulty, and the game saves to both the game cartridge itself and external storage.[