Iridion 2 is a sequel to the original Iridion 3D, a shoot 'em up game developed for the Game Boy Advance and released in 2003. Unlike its predecessor, Iridion 2 features a more traditional 2D gameplay experience with pseudo-3D visual effects. The game takes players through various intergalactic environments, battling an assortment of enemies and bosses. Players navigate spacecraft with a variety of weapons and power-ups at their disposal. The game is noted for its challenging gameplay, detailed graphics, and soundtrack that pushed the limits of the Game Boy Advance hardware.