The rather fun Fun-Motion physics game blog has a mini-review, complete with video, of Plasma Pong, "a mesmerizing freeware title by Steve Taylor, a student at George Mason University. It combines a cutting-edge realtime fluid dynamics simulation with the game structure of Pong."

It's explained of the title: "There isn’t a whole lot to say about the gameplay in Plasma Pong, really. The game structure mirrors that of the original Pong: You score if the ball makes it past your opponent’s paddle and vice versa... The right-mouse button creates a vacuum and sucks the ball towards you. This is a great way to safely catch the ball, as the fluid dynamics tend to create sudden unpredictable movements as the ball gets caught in eddies and currents."

But wait, there's more: "Left-mouse button fires plasma which shoots into the playfield. It can be used to push the ball for some extra speed, but also modify the currents. If you can succesfully create an eddy near the opponent’s side you can usually score when the ball makes sudden last-second movements." Excellent stuff, and well worth checking out.