If you're unfamiliar with it, the book takes place in the near dystopian future, where peak oil and global warming have pretty much ruined everything. But the world's first true persistent VR, the OASIS, has become for most people their means of escape from the hell Earth has become. It has its own economy, and game credits translate into real money. People work there, aside from just playing. Pretty much every internet service is delivered through it. And from the way it's described, it's amaze-balls awesome.
The original designer/coder was a geek roughly the same age as me (born in '72, I was born in '73) and loved to throw in all the stuff he could referencing pop culture from the late 70's to the early 2000's, but mostly from the 80's. Within the VR there are countless planets. Some allow high technology. Some allow magic. Some allow both. As with any MMO, there are PvP zones and safe zones.
There is a zone with planets based on Star Wars, another on Star Trek, one on Firefly, etc. Every D&D module has been coded in there as a 3D environment you can explore, most on the planet Gygax. There are giant Japanese robot worlds and cowboy worlds and Middle Earth, Zork, Hyrule, etc. Whatever cartoons you grew up watching in the 80's? There's probably a world in there for it.
|Acererak challenges you to Joust (by J. Delgado)|
Basically, it's the Mother of All Kitchen Sink Settings.
So I'm imagining (some day, when time is no hindrance, which will probably never come) setting a game there. Players would start with Classic D&D (or Labyrinth Lord or whatever) on a D&D style planet, but once they've got the funds or means to teleport or travel through space, other worlds open up, and each world has the potential to add new options for the players' character races, classes, equipment, spells, etc. based on other OSR rule sets.
So visit the world of Tombstone, and Go Fer Yer Gun or Boot Hill cowboy characters, sixguns, etc. become available. Visit Gamma Terra, and mutant characters and recovered high tech "artifacts" enter the game. After visiting planet LV-426 (if you survive the face huggers), colonial marines and pulse rifles enter the game. Visit Smurf Village and um...try to catch them and turn them into gold like Gargamel? Or something.
Basically, I'd just be giving myself cover to throw in any sort of interesting pop culture references I feel like. And I'd be forcing myself to actually read through and implement stuff from lots of these OSR games I've collected on my hard drive, but haven't bothered to look at other than a cursory glance or two.