here are a few things I think would make a game (not really related to byond though).

1.Afterlife 2:I recently found this cd and tried it. It was fairly good and had very funny buildings. If there was a second I would like to see: 1. 3 dimensional afterlife, 2. you can follow the souls to where they go and see their torture/reward, 3.get to look on the planet, 4.more buildings (and maybe choose which one out of a hundred or so for each reward/punishment depending on the syringe-rocks).

2.Monty Python and the Holy Grail: This would cover all of the movie and then some, including (maybe) after his arrest and more stuff that happened (like quests) on the way to get the grail. Maybe even unlockable mini-games, such as cutting down a tree with a herring (and re-enacting the fish dance) and seeing some parts of monty python's flying circus (such as the joke that killed).

These are my current ideas, add any other ideas.