Iron Soldier 3 is a mech-based combat simulation game for the Sony PlayStation 1. In the game, players pilot towering robots known as Iron Soldiers through a series of missions with a blend of action and strategy elements. The player battles against enemy forces in destructible 3D environments using an arsenal of weapons, from rockets to beam weapons. The game features both single-player campaigns and a two-player versus mode. Iron Soldier 3's gameplay emphasizes heavy mech combat and objective-based missions, placing it firmly in the action-simulation genre.