I have two ideas.

The first idea is to get Dave Cook and/or Tom Moldvay to write the D&D Companion Rules for the '81 edition of Basic/Expert D&D.  The tantalizing hints in the '81 Expert set indicate that a lot of interesting stuff never made it into the Mentzer version of Companion/Master/Immortal D&D.

Or as an alternative I'd give the whole budget to S. John Ross and let him make whatever he wants.

Quote from: jhkimDo you have GURPS Alternate Earths and GURPS Alternate Earths 2, by Ken Hite, Craig Neumeier, and Michael Schiffer?  Most of them are occupied by the specific alternate histories -- but good examples go a long way, and there is some discussion of the genre and principles.

I have those, an they're great! But GURPS Infitite worlds for 4th ed. has already covered them is an alternate worlds setting...It's close to what I want, but I'd rather have a full on book with advice so other people can run an alternate history game.

Mostly because I'm selfish and want to play in one instead of run it.

Quote from: Caesar SlaadGT: First In (that is, a realistic take on planet generation.)

I'm still looking for this book. It baffles me that I can apparently find any of the GURPS Traveller books I don't want, but the only time I've seen this for sale is on eBay for too much money.

Quote from: BagpussThe sort of thing that's been done for Traveller in several editions?

Yes, and no.

GT First In is probably the first tolerably realistic take on it.

I love Grand Census/Grand Survey/World Builder's Handbook with all my simulationist world building little heart. However, those books are layered on top of a system that was built more on simplicity than realism.

For example, for Traveller worlds with a size factor of less than 4, there should never be a breathable atmosphere. And, in world of any age, there should be NO atmosphere. The relationship between the lightest gas that will be in the atmosphere and gravity is pretty explicit. Traveller 2300/2300AD took this into account, but none of the "Imperium" Traveller games by GDW did. And sadly, since Traveller d20 is painfully faithful to Classic Traveller, it inherits this error.

Quote from: Balbinus... an Elizabethan CoC supplement....

A good sourcebook for the Elizabethan era would be very cool (a CoC version would be fine, but I would prefer a more general sourcebook, maybe something like a GURPS book even though I never play GURPS).

I always thought that a fantasy Elizabethan game would be quite cool.  (WFRP doesn't quite do it, as it is historically pre-Elizabeth, and no England analogue exists in the Old World -- 'Albion' doesn't come close.)

Quote from: Dominus NoxI'd like to do a source for the second american revolution, in which players are american citizens who are fighting to overthrow the fascist regime running america on behalf of the plutocratic corporate oligarchy that has covertly seized power and is reducing america to a third world state.

Morrigan Press has Revolution, which sounds like it fits this bill pretty well. Here's a link:

http://www.morriganrpg.com/gm-omni.htm

Quote from: laffingboyMorrigan Press has Revolution, which sounds like it fits this bill pretty well. Here's a link:

http://www.morriganrpg.com/gm-omni.htm

Thanks.

I could swear you were my old buddy Seanr451 from the andy hackard forums....

If I could have any supplement written, it would be a "modern day" sourcebook for Ars Magica.  The real question is who to write it.  I'm thinking either Jonathan Tweet (no one's better qualified to write an Ars Magica book) or Greg Stolze (who's done some kickass modern day fantasy rpg work).

A Dragaera sourcebook, from Steven Brust's Jhereg books, ideally a GURPS-style complete reference, ideally statted for d20 and Tri-Stat.  With Steven Brust contributing.

And bigger than Ptolus.