The game's multiple missions (including 'Die, Fuhrer, Die!', an assassination mission to take out Hitler himself) contain plenty of secret rooms and extra goodies for the observant player, along with plenty of baddies to shoot.
In this day and age, Wolfenstein 3d is a touch on the retro side, but remains extremely playable. The first-person view is amazingly fast, and was one of the first games that induced motion sickness amongst players. Though the primitive engine doesn't leave much room for creative level design, everything in Wolfenstein 3d oozes atmosphere, from the German voices to the freaky Nazi propaganda that lines the walls. Wolfenstein 3d has the player blasting through level after level of Nazi prisons and bunkers, shooting first and asking questions later. After overpowering your guard with some good 'ol American trickery, you grab his handgun and get ready to make 'em pay.
soldier captured by those goose-stepping rats. This game was the one that proved PC's were able to handle fast 3D gameplay, and spawned clones galore (including the brilliant Doom, from the same company). You'll be cursing the Third Reich every second you're playing Wolfenstein 3d, the definitive first-person shooter from the wizards at id Software.