Impossiball [Steam, Official Site], an interesting take on a Pong-like game has plans to bring out a Linux version. It looks somewhat amusing.
There was a post on Steam requesting a Linux version and the developer responded the same day:
Yes we will definitely do a Linux version. Our plan was to wait until we near full release (rather than maintain too many versions). However, we need someone to test the Linux version for us (as we don't currently have a Linux box). Would you be interested in testing for us?
Dark Duo Games
About the game
The 1970's and 80's were a golden time for video games. Impossiball pays homage to one of the original greats of that era, but with a 21st century update.
The aim is to score as many points as you can by getting balls past your opponent, whilst stopping as many as possible from getting past you. By rotating your ship you have fine control over the direction balls will bounce. The first player to reach the score limit wins. There is a variety of Power-Ups and 'game changers' like Magnet, Invisiball, Inversion, Shield and Impossiball to make your game easier, or your opponent's game harder.
Time-tested, classic game-play upgraded with 500 balls on screen and 3D graphics. You can try to beat the AI (with three difficulty levels) or challenge a friend.
Thanks for letting me know PieGamer314!