I played Chorus during one of the recent Steam demo festivals and was instantly impressed. It's kind of strange that it otherwise never showed up on Steam. It's is an arcade space shooter which does really well in some areas, but badly in others. I'd definitely recommend trying it; there are so few good space shooter games out there. Absolutely support studios who make games with this standard of quality. There are some really odd design decisions, but the visuals are amazing, and combat stays fun throughout the game. The story and dialogue is bad, but if you can ignore the last part of the main story - the gameplay is really good fun. Finished in 12 hours.