MicroHexon Research has invented a transformative medical technology: autonomous nanotech machines that are no larger than a blood cell. When injected into the body they target and eliminate diseases at the cellular level. However, something has gone dangerously awry. The nanomachines have bonded to the diseased cells and are now multiplying inside the body at an exponential rate. Piloting a new prototype MicroBot, players must seek and destroy the infection before it consumes the human host from the inside.

In MicroBot, players battle malicious enemies as they travel through veins, bones, lungs and brain. The rhythms and fluids of the human body create a dynamic environment that affects movement and gameplay, providing both combat advantages and additional hazards to overcome. Just as each human body is unique, MicroBot dynamically creates new levels to ensure that the challenge is different every time gamers play.