“Fun for everyone, young and old, noob or expert. Available for Windows, GNU/Linux, BSD, and macOS. Parkour, impulse boosts, dashing, and other tricks. A huge amount of mutators and game altering variables. Create maps with other players in realtime co-op edit. Over ten years of active development, and still going!
Red Eclipse is a fun-filled new take on the first person arena shooter, featuring parkour, impulse boosts, and more.
The development is geared toward balanced gameplay, with a general theme of agility in a variety of environments.” source: redeclipse.net