ACE Online is a free-to-play action-based Massive Multiplayer 3D Space Shooter. In ACE Online, players can pilot their own fighter ships (also known as Gears), on a futuristic world where they can upgrade skills or the Gear itself. Gamers have full control over the Gears movement, making it very different from the traditional style RPGs mouse click control method. This is a Role-Playing Game (RPG), but with all the fun and action of a First Person Shooter (FPS). Since the background of ACE Online is based in a spacious 3D atmosphere, players need to be aware that an enemy missile can strike at any time and from any direction.