In Ace Online, players pilot their own individual starfighters (called "Gears") throughout a number of maps, including terrestrial, lunar, and space maps. It has typical MMORPG elements such as leveling, currency, and a skills system. Ace Online is a largely Player vs. Player (PvP)-oriented game, with character leveling and item acquisition achieved through combat against Non-Player Characters (NPCs) and the completion of missions. As a player gains levels, more and more maps become accessible.