Wolfenstein has been brought up by a couple of people in the games nostalgia thread, so I figured this is worth posting for those who might like to play Wolfenstein as it was originally intended.
Wolfenstein 1D
Play the game (for free!) here:In 1992, Wolfenstein 3-D revolutionized video games and created the 3D first-person shooter genre. Now, after decades of development, Wolfenstein 3-D has been converted to breathtaking, epoch-making 1-D. You can now play the game in a single, dazzling one-pixel line.
Wolfenstein 1D