The original Doom just got released on Xbox Live Arcade. I tried the demo out and realised just how much demos have changed. The original game was released as shareware: the first third of the game was available for free and you had to pay to play the rest. On Xbox 360, only the first level is available for free, and you must pay for everything else.
I can’t say I’m surprised, but I think the new demo is a bit too limited for its own good. You can’t appreciate what makes Doom good from the first level only… The original game became a mega hit by offering a large fraction of the game for free, you’d think this proven success would lead them to repeat this approach…
Strangely, the demo is also quite a bit larger (in file size) than I remember the original game being. I wonder why that is, considering the game is identical.