Quake III: Arena
Originally released on January 23, 2013
This is probably one of the smallest tournament maps you will find. The gameplay is boring and can be very one-sided, and the visuals are basic.
The main chamber holds a red armor, which is likely what you'll be fighting over most of the time. Two small halls branch off from this chamber, each one leading to its own two-way teleporter. One of these rooms has a shotgun, the other has some shotgun ammo. A larger corridor branches off from the main chamber to a smaller room with a rocket launcher and two large health pickups. If you can hold down this room, you've basically won the match.