I’m sure you remember the classic 1st person shooter Wolfenstein 3d. The creators iD Software have revived the game once again and ported it to run on the iPhone. Non developers can buy the game from the App store for $4.99 Interestingly though, if you are an iPhone Developer, the full source files for the game are released free under an open source license. A full paid ($99) iPhone developer license is required in order to compile the code on your own device.
The source code can be downloaded here from Id’s ftp server
If you are interested in running Wolf3d on the iPhone simulator you need to make some minor code modification. Instruction can be found at ghostradio.net
