Individual games are played out on a representative scale that is roughly equivalent to a planetary system. The game's multiplayer mode allows for skirmish battles with the computer or other players. The game features a continuous campaign of 20 missions divided into five parts: one for each of the playable races and a fifth part in which the player fights against the Borg while controlling an alliance of the other three races.
Dilithium is mined from moons by resource gatherers. Crew is automatically generated over time via starbases. Two primary resources are used in the game: crew and dilithium. In addition to weapons and shields, players can capture one another's ships and stations. Each faction fields six different classes of starship ranging from scout to capital ship, which also possesses a unique tactical ability. A handful of ships from other Star Trek races appear in campaign missions, including Ferengi, Cardassians, Dominion, and Breen. Four playable factions are featured in the game: the Federation, the Klingons, the Romulans, and the Borg. Armada is a real-time strategy game in which players select a faction from the Star Trek universe and build fleets of starships and space station bases to conduct battle.