Warsow is probably the most fast paced arena shooter to ever exist. On top of the traditional strafe jumping techniques, you got dashing and wall jumping which you can use to redirect speed and or conserving it while cramming through narrow corridors and corners or simply feeling like doing a 180° turn. Since the weapons are more the less same as Quake 3, Warsow kind of plays like CPMA/Reflex on steroids.
Con Development has ceased
The game is no longer being updated, the developer team disbanded and branched off to their own respective projects. This also means that the game will never be on Steam. Regardless of some parts of the game being open source, the community is simply not big enough to self-sustain the game. There should still be a flow of new maps and tournaments though.