Serious Sam Advance (also marketed as Serious Sam) is a 2004 first-person shooter game developed by Climax London and published by Global Star Software for the Game Boy Advance. A spin-off in the Serious Sam series, the game has the player control Sam "Serious" Stone through confined levels—first in ancient Egypt, then in ancient Rome—defeating varying enemies using an assortment of weapons. Serious Sam Advance was developed by Climax London, a studio of former Crawfish Interactive developers, using ray casting technology.