Post them here. Tell us what kind of game it'd be. And whether or not a game adaptation would be possible even now.

THEN: A console platformer, a la Batman. And an adventure game on the PC, a la King's Quest and the like.
NOW: A downloadable stealth-action game, a la Batman: Arkham Asylum. And possibly a hacked version of the NES Batman game.

THEN: NES action game.
NOW: XBLA/PSN/eShop game, possibly Metroidvanian(?) in gameplay.

THEN: SNES/Genesis action-adventure/sim-strategy game, enmeshing games like Flashback with Populous-lite elements. Basically, you'd play as Bud or Doyle as you fix the Bio-Dome in the span of 9 months, which basically puts you right after they thrash the Bio-Dome. You'd also have minigames that figure into the goal of achieving homeostasis, which puts you in the shoes of the other Bio-Dome denizens.
Ironically, a game too smart, complicated and unappealing to the standard Bio-Dome fan.
NOW: Are you serious? Make the game it could have been, but WITHOUT the Bio-Dome license.

THEN: A 16-bit action game.
NOW: A current-gen action game.


