Unreal Tournament 2004 has a single-player mode and players should still be able to play multiplayer through LAN, but the game losing its online functionality is still heartbreaking, especially since it's one of the highest-rated games of all time and an important part of the industry's history. While the game is not nearly as popular as it was when it first released, there are still those who play Unreal Tournament 2004 online who will no longer be able to do so come January 24.