Using time travel technology, the evil Mental has been warping Ancient Egypt and Rome into his own wicked vision. Only one man has the guts to travel back in time to correct things one bullet at a time – Serious Sam!

All the hectic, non-stop madness that the Serious Sam series is known for is coming to the Game Boy Advance for the first time with a new story, new levels, and new enemies. The system may be small, but the thrills are bigger than ever!