The Star Battle Loading Screen background.
Star Battle is a a custom game variant for StarCraft II (UMS Map). Two teams consisting of up to six people engage in intense fleet combat, with each player using one of the nine distinct capital ships, each wielding a formidable array of abilities and weapons. In competitive and organized play, usually no more than two of each ship type may be present on a given team.
Star Battle's combat consists of each of the two teams spawning at a base ship, which they must protect while attempting to destroy either the opposing team or the enemy base ship. Each ship can be upgraded at the base ship with minerals gained from killing or farming enemy 'creeps' in the form of Phoenixes and Vikings. Upgrades such as firepower (weapons/abilities), defense (armor/shields/health), speed, and/or energy increase a ship's power and reflects individual playstyle. If a ship is destroyed, it does not respawn. This is a distinct difference from many custom games, and this part is what makes Star Battle much more than simply a 'DotA in space', as which it might appear at the first glance, otherwise.
The most important aspect of Star Battle is the team play. A solo ship is an easy target for an enemy fleet, but a team helping and covering each other is almost impossible to defeat. A good team can save an almost dead teammate or ambush an unsuspecting enemy fleet.