Did you ever used a printer for playing games? No? Now you have the chance with Receipt Racer. All you need is a videobeamer, a printer, some game controller, a Mac and a copy of Receipt Racer. Even the sourcecode is available!

The game is played on a receipt printer, a common device you can see at every convenient store. It prints those papers you usually find crumbled up in your pockets, just to throw them away. It is a thermal printer using heat to darken the paper. This eliminates any slowdowns in printing lots of black. A roll can be ordered online and costs around 80 cents. 50 meters is the maximum distance you are theoretically able to race in one run, before running out of paper. So ecologically it’s pretty much a disaster, just like any real car.

The nice thing is: after finishing the race, you can take away the map you played. The map includes the score and a nice game-over screen as well.

How did they made the collision-detection? It is all about calibrating the beamer with the software. The game-engine knows the playfield and also knows the position of the player sprite. Collision therefore is not made on the reality-surface, but internally in the software. Great project, made by undef and Joshua Noble. (via)