Downloadable version: Unzip and find the "release" folder. The executable is named "obligatorio.swf" and should always be accompanied by the text file data.txt. Aditionally, this file is easily modifiable, so you may switch up the speed, frequency, order and types of obstacles for both players.
The game must be played in a stand-alone flash player, instead of a browser, as it uses graphics acceleration via hardware. One can be found in the beta release section of Adobe Labs. You may also need to add a security exception for the game's folder in Flash Player's settings.
All assets, including music, graphics and code created by the jammers, on-site.