Teeworlds
Publisher: Teeworlds Team · Release date: 2015-08-24
Teeworlds is a free online multiplayer game, available for all major operating systems. Battle with up to 16 players in a variety of game modes, including Team Deathmatch and Capture The Flag. You can even design your own maps!
Free to play on Steam
Steam gives Teeworlds away: download it and play without paying anything.