Quetoo is a free, open-source first-person shooter game for Windows, Mac, and Linux. It is based on the Quake II engine and has been optimized for modern gaming systems. The game features intense action, realistic environments, and a wide variety of weapons, items, and monsters. Quetoo also has a powerful scripting language for modders, allowing for the creation of custom levels, weapons, and more. The game also has an active online community, with servers hosting tournaments and ladders for competitive play. Quetoo is an excellent choice for anyone looking for a fast-paced, intense shooter experience.
Discontinued development has been discontinued, as indicated at https://www.warsow.net/forum/thread/17216/1. The latest version, 2.1, released in March 2016, can still be downloaded from the official website.