Quetoo is described as 'Free, standalone first person shooter video game based on id Tech2. Our goal is to bring the fun of oldschool deathmatch to a more contemporary platform, and perhaps to a new generation of gamers'. There are eight games similar to Quetoo for a variety of platforms, including Mac, Windows, Linux, BSD and PortableApps.com. The best alternative is Xonotic, which is both free and Open Source. Other Quetoo like games are Unreal Tournament (Free, Open Source), Quake (Paid), Cube 2: Sauerbraten (Free, Open Source) and Warsow (Free, Open Source).
- 8 alternatives
- AssaultCube is a free, multiplayer, first-person shooter game, based on the CUBE engine. Taking place in realistic environments, with fast, arcade gameplay, it's addictive and fun!. View 59 alternatives to AssaultCube
No more updates since Nov 2013 : http://assault.cubers.net/ (like Alien Arena, also noticed discontinued)
- Free • Proprietary
- Nexuiz was originally developed by Lee Vermeulen and Forest ‘LordHavoc’ Hale, who started Alientrap in the summer of 2002. View 19 alternatives to Nexuiz Classic
Nexuiz is no longer developed. It's successor is Xonotic , but last version of Nexuiz Classic, 2.5.2, released in 2009, can be still downloaded from the official website.
- Free • Open Source