Unreal II: eXpanded MultiPlayer (2003)

XMP is a team-based game, where the players are split into two teams, red and blue. Both teams have a base with an Artifact Node. Each Artifact Node initially contains two Artifacts. The main objective is to steal the enemy's Artifacts and then register them at the Artifact Node belonging to the player's own team, but a team can also win by capturing and holding all generators, effectively draining the enemy team's energy.