An enormous arena with more space in the outlying corridors and small rooms than in the main area. Construction is generally well done, with nice clean Thunderdome-like choices. The main arena is floodable with lava, so beware... in fact, KOTH games are pretty unlikely to have very high hill times, since the lava switch is not attackable from the hill. If you stay out of the secret passageways, you can have high carnage rates with groups of 3 or 4. As soon as you go exploring, 8 will be too few...