OpenArena

OpenArena is a first person arena shooter based on QuakeIII.
Features:

• FOSS
• crossplatform
• ioquake3 engine
• low system requirements
• doesn't require steam or other such platform
• easy to setup
• fun!

Sounds good? :)

Installation

Download it, extract and run.

If you are a Linux or BSD user, it is very likely that your distro has it in its official repos, otherwise, use the link above. Some users might have to install additional libraries like SDL, OpenAL or such.

Ready up. :)

Servers

You can run your own of course, but there is a bunch of public servers readily available.

Let's play! :)