Your Favorite RPG Supplement, for any Game, Period

[Tsillanabor]

I might have to go with The Ultimate Powers Book for the now out-of-print Marvel Superheroes game. It is an invaluable source of ideas for any supers game, whatever the system.

That was an awesome supplement. If it worked across systems it would be number one.

 

[Arnwyn]

The first product that immediately jumped to my mind is:

Empires of the Shining Sea (2e) for the Forgotten Realms. (A close second is the 2e box Planes of Conflict for Planescape.)

 

[DanMcS]

Birthright from 2nd edition AD&D. The first game that changed the whole way I think about gaming. Build kingdoms! Lead armies! Run international cartels and religions! Cast spells on a national scale! Inherit the bloodlines of gods! It was so awesome it has really affected every game I've run since, to some degree.

 

[grodog]

I had a post saved to this effect, but I can't seem to find it, again. Sigh. So I'll build it again, and this time I really will post it to my web site too

My favorite adventures of all time are:

• Arnor: Land of the Witch King (MERP; ICE)
• Broken Covenant of Calebais (Ars Magica; Lion Rampant)
• The Court of Ardor (MERP; ICE)
• "Deep Sh*t" (Blue Planet convention tourney; Biohazard Games)
• The Enemy Within campaign (Warhammer FRP; Games Workshop)
• G3 Hall of the Fire Giant King (D&D; TSR)
• "Grace Under Pressure" (Call of Cthulhu; Pagan Publishing)
• Griffin Mountain (Runequest; Chaosium)
• "In Medias Res" (Call of Cthulhu; Pagan Publishing)
• Masks of Nyarlathotep (Call of Cthulhu; Chaosium)
• Shadows of Yog-Sothoth (Call of Cthulhu; Chaosium)
• T1 Village of Hommelet (AD&D; TSR)
• Tomb of Abysthor (d20; Necromancer Games)
• "Treasures of the Dragon Queen" (D&D convention tourney c. 1983; Rutgers University Gamers; details on my site @ http://www.greyhawkonline.com/grodog/gh_tourneys_dragon_queen.html)
• WG5 Mordenkainen's Fantastic Adventure (AD&D; TSR) and the "Maure Castle" series (d20 in Dungeon; Paizo)
• Yellow Clearance Black Box Blues (Paranoia; West End Games)

My favorite supplements of all time are:

• Big Rubble (Runequest; Chaosium)
• Chessboards: The Planes of Existence (generic D&D; WotC)
• Cities (generic D&D; Midkemia Press)
• Delta Green (Call of Cthulhu; Pagan Publishing)
• Different Worlds Magazine (1979-1986; Chaosium)
• Dragon Magazine Archive (D&D; WotC)
• Dungeon Magazine 1986 to present (TSR, WotC, Paizo)
• Faeries (Ars Magica; Lion Rampant)
• GURPS: Illuminati (GURPS; Steve Jackson Games)
• GURPS: Russia (GURPS; Steve Jackson Games)
• Order of Hermes (Ars Magica; Lion Rampant)
• The Primal Order (generic D&D; WotC)
• Thieves World box set (multiple systems; Chaosium)
• World of Greyhawk box set (AD&D; TSR)

My favorite core rule books of all time are:

• Ars Magica, 5th edition (Atlas Games)
• Blue Planet, 2nd edition (Fantasy Flight Games)
• Call of Cthulhu 5th edition (Chaosium)
• Dune: Chronicles of the Imperium (Last Unicorn/WotC)
• Dungeon Masters Guide, 3rd edition Revised (AD&D; TSR)
• Fading Suns, 2nd edition (Holistic Design)
• Kult, 1st edition (Metropolis)
• Paranoia, 2nd edition (West End Games)
• Star Wars, 2nd edition Revised and Expanded (West End Games)
• Vampire: The Masquerade, 1st edition (White wolf)

 

[buzz]

I'll have to second the nomination of Dark*Matter; it was the first thing that leapt to mind when I read the OP. Love it.

I would also mention Best of The Dragon, vol 1. I can't think of any other supplemental product I re-read as often when I was a wee gamer.

As for Runequest... anything from the RQ2 era is excellent. As much as I loved paging through my Cthulhu/Nehwon/Melnibone-inclusive Deities & Demigods back in the day, you put it next to Cults of Prax and... there's just no contest.

Looking at some of my more current books, Goodman Games' Power Gamer guides probably get the nod in the d20 category. Of the piles of d20 supplements I've owned, they've been the most useful and most fun to read.

Looking beyond d20... it's the Monster Burner for Burning Wheel. Best monster book ever for the best FRPG since... well, RQ2.

 

[Voadam]

Ravenloft Campaign Setting, original black box set.

 

[Huw]

Chronomancer (2e) The best time travel rules I've ever seen.

 

[Bobitron]

Universal Brotherhood for Shadowrun.
Creative layout and presentation. Awesome plot twists. Great suspense.

Ooo, good call. That was great.

I think I'd vote for either the Planescape box or Privateer's Iron Kingdoms Player's GUide and World Guide.

 

[DMH]

For d20, Occult Lore, Second World Sourcebook and Shaping the Self are about equal.

For overall, GURPS Y2K, GURPS Uplift 2nd ed, Tangents for Alternity and the adventure Legion of Gold for 1st ed Gamma World. Some Blue Planet and Transhuman Space come close.

 

[grodog]

the adventure Legion of Gold for 1st ed Gamma World. Some Blue Planet and Transhuman Space come close.

Legions of Gold is great---good call DMH

Which BP did you like? I wrote for the 1st edition of the game.