The 4th edition Gamma World rulebook occasionally references AD&D when explaining rules. It's fine shorthand for players of both games, but the information is somewhat barebones for anyone lacking that expertise. Assumed knowledge is not an uncommon pitfall for game designers.

Several different groups competing in a shared adventure. Each party is endeavoring to find the same hidden treasure, and the GMs pass notes to one another when the PCs leave a trap to ensnare the other groups.

I wasn't very happy with one of the games that I've been running even though the players were enjoying it just fine. Partly, I think it's that I was running D&D to satisfy a friend who ended up quitting the game. I've been in the mood for something else. I'm thinking Gamma World.

Trolls in my campaign skulk at the fringe of human society, earning monikers like Weird Gary or Creepy Dan. They obsess over an individual, sometimes trailing after an adventuring party, picking off sentries for sustenance until they can eventually devour the object of their affection.

I haven't read them, but the guy wrote all of these horror novels about killer crabs. The books are OOP and like $200 now.