Unreal Tournament III DM Spectrum Map
Matthew Bradley is doing what I wish more modders would do. Taking something as simple as lights and mixing it in with deathmatch to create something really unique and beautiful at the same time. As you can see below in the video, players navigate around a level in the dark. The player's movements enable lights on the floor below the player which creates a trail allowing other players to see you. The end result is something simply awesome to look at.
The cubes also serve a purpose. They help to keep the level paced. Each coloured cube represents a different area of the map. These areas are colour-co-ordinated to match the cubes. When a player is in one of these areas the corresponding cube lights up notifying other players. As one learns the map they should be able to find enemies without too much hardship.
You can find more of Matthew's work on his website - http://matthewbradley.co.uk/