Dominion

Dominion is a game mode in Halo 4, in which players compete to capture, fortify, and hold bases from the opposition. A team wins when they reach the score limit (400 points by default ) or if they have the highest score when the time limit is reached. Teams can gain an early victory by capturing all of a map's bases and then killing all members of the opposing team.

Rules and playstyle
Two teams compete to capture bases on the map. A base that is captured and held for a certain time will fortify, activating turrets, shield doors, and other base defenses. Fortified bases are periodically resupplied with new vehicles and Ordnance drops. Points are awarded for each base capture (10 points), fortification (20 points), and resupply (30 points). Bonus XP is awarded to players that kill opponents while near a base.

When one team captures all bases on the map, the other team is forced to make a Last Stand. A team in Last Stand gains Last Stand Traits (which, by default, grant overshields), but loses the ability to respawn. If all members of the team in Last Stand are killed, then the other team wins the round early. However, a team can end their Last Stand and regain the ability to respawn by re-capturing one of the bases on the map.