Carrier Command: Gaea Mission is the successor of Carrier Command and shares the basic mix of strategy and action. The game is set in the future when a war between UEC and APA almost destroyed Earth. Now both factions fight for control over the moon, a big ocean with many islands, which offers resources Earth can't deliver anymore.
The center of control is the faction's carrier from which everything is managed. However, in contrast to other real-time strategy games, the player only controls up to eight units: four tanks and four aircraft. The equipment can be assigned to each vehicle individually, including a hacking computer necessary for overtake enemy buildings, so each has its own function. Most of the game is spent in tactical assaults to conquer islands. However, there is also a resource management component as each island is either a base for defense, mining or manufacturing.
The majority of resources are used for manufacturing additional equipment or bringing in replenishment from far away. Damages on the carrier itself may cause certain functionality to be disabled, so repairs have to be kept in mind, too. Each vehicle, including turrets to defend the carrier, can be directly controlled by the player to participate in combat.
There are two playing modes: the free strategy mode with adjustable starting and winning conditions and the story campaign. The campaign also features some basic first-person shooter segments.