[3] Following the closure of Space Cowboy Online, the European version of the game would be hosted under GameForge4D GmbH and renamed to AirRivals in early 2008 (originally, it was intended to be known as Flysis).

[4] The North American release would soon follow, with hosting from Suba Games beginning on September 26, 2008, titled Ace Online.

Players were offered the chance to transfer their gears and in-game items to a new server, where the European version would once again be renamed, this time to Ace Online.

The item shop also includes "Weapon Gamble", "Enhancements", "Enchant Protection" and "Legending" services.

"Enhancements" affect a player's weapons and armor to boost performance, such as having faster missiles, higher rate of fire, or damage.

Arena battles usually give a small amount of NCP compared to Strategic Points and Mothership wars.

One of the most popular areas for these unorganized battles is "Bark City", as it is a neutral zone between the two warring nations.