After following a series of basic tutorials (by 3dBuzz), I created my version of the two rooms by using techniques that I gain from the tutorials as much as possible.
The rooms were decorated by various static meshes such as beams, pillars, light, and statues. A small tip that I gain from this video is making mirror effect (flipping object), by changing an axis to negative number.
The images above show a basic level of creating rooms in Unreal Tournament 3 Editor (UT3 Editor). These rooms were built from three cubes with light and material applied.
In my opinion, a game is a competitive activity involving rules in which people or teams have to make some decisions in order to achieve a certain goal.