From July 2017, the tabletop fantasy roleplaying generic supplements from FLYING BUFFALO


All seven CITYBOOKs - four GRIMTOOTH'S TRAPS - and MSPE!

Starter Collection - $7.95

  • CityBooks I-III
  • Grimtooth's Traps 1-2
  • Treasure Vault

Bonus Collection

  • CityBooks IV-VII
  • Grimtooth's Traps 3-4
  • City of the Gods Map Pack
  • Mercenaries, Spies, & Private Eyes
  • Mugshots - Pacific Clipper

(Looking for our other offers?Darkfast Dungeons -- Mythras Core -- Mythras Worlds -- War on Everything )

Adventurer! In a good cause we've revived our July 2017 Catalyst Bundle, featuring the Catalyst line and other tabletop fantasy roleplaying game .PDF ebooks from Flying Buffalo. The late Rick Loomis, founder of Flying Buffalo, publisher of Tunnels & Trolls, and designer of the first-ever solitaire adventure (Buffalo Castle), passed away Friday, August 23, one day short of his 73rd birthday, after a struggle with lymphatic cancer. Facing overwhelming medical bills, Rick's family has started a GoFundMe campaign, and we're also helping with this great collection of Buffalo's Catalyst supplements that work with any fantasy RPG. Notably, the CityBook series presents dozens of individual shops, establishments, and characters you can add to any urban fantasy adventure.

This revived collection brings you all seven CityBooks, four Grimtooth's Traps collections of devious dungeon obstacles, and the RPG Mercenaries, Spies, & Private Eyes. For this resurrection we've added a recent Catalyst title, the City of the Gods Map Pack, and the solo adventure Mugshots No. 1 - The Case of the Pacific Clipper. (And if you bought this offer during its original July 2017 run, check your Wizard's Cabinet -- you get both of these new additions too!)

For just US$7.95 you get all six titles in our Starter Collection (retail value $30) as DRM-free .PDF ebooks, including the first three CityBooks (I: Butcher, Baker, Candlestick Maker, II: Port o' Call, and III: Deadly Nightside), plus the first two Grimtooth's books and Treasure Vault.

And if you pay more than the threshold price of $22.76, you'll level up and also get our entire Bonus Collection with ten more titles worth an additional $49:

  • CityBooks IV-VII: Four more sets of people and places you can easily drop into any city adventure -- IV: On the Road, V: Sideshow, VI: Up Town, and VII: King's River Bridge.
  • Grimtooth's Traps 3-4: Titled Fore and Ate (don't ask us why), these two books give you hundreds more traps to waylay dungeon delvers.
  • NEW IN THIS REVIVAL! City of the Gods Map Pack: The wondrous place built by all the pantheons of Earth after they left this world behind.
  • Mercenaries Spies & Private Eyes: Michael Stackpole's classic action/espionage RPG inspired by Tunnels & Trolls. Includes the Adventure of the Jade Jaguar solo adventure. (Both were also part of our September 2018 Tunnels & Trolls Bundle.)
  • NEW! Mugshots No. 1 - The Case of the Pacific Clipper: A high-flying pulp-era solo adventure for MSPE written by Dungeons & Dragons co-designer Dave Arneson.

Learn more about our offers at our official blog, Beyond the Bundle.

Honoring a gaming industry founder

Ordinarily we donate 10% of the revenue from a Bundle of Holding offer to a charity. For this Catalyst Bundle revival, we're adding the charity portion to the publisher share, to help Flying Buffalo and the family of the late Rick Loomis through a tough time.

Starter Collection

Pay the minimum price to get these titles:

CityBooks I-III

Butcher Baker Candlestick Maker - Port o' Call - Deadly Nightside
  • Designer(s): Larry DiTillio, Liz Danforth, Michael A. Stackpole (eds.)
  • Flying Buffalo, 349 pages
  • Retail price $15

Grimtooth's Traps 1-2

Delvers beware -- 202 traps for any roleplaying system
  • Designer(s): Paul Ryan O'Connor, Pat Mueller, Michael A. Stackpole (eds.)
  • Flying Buffalo, 164 pages
  • Retail price $10

Treasure Vault

More than two dozen highly interesting items
  • Designer(s): Steven D. Howard, Stephan Peregrine
  • Flying Buffalo, 44 pages
  • Retail price $5

Bonus Collection

Beat the threshold price to LEVEL UP and get this entire collection of BONUS titles:

CityBooks IV-VII

On the Road - Sideshow - Up Town - King's River Bridge
  • Designer(s): Jennell Jaquays, Randall G. Kuipers, Debora Kerr (eds.)
  • Flying Buffalo, 414 pages
  • Retail price $20

Grimtooth's Traps 3-4

Fore and Ate -- hundreds more traps for any FRPG
  • Designer(s): Liz Danforth, Michael A. Stackpole, Paul Ryan O'Connor (eds.)
  • Flying Buffalo, 170 pages
  • Retail price $10

City of the Gods Map Pack

Where all the pantheons meet to plot and to struggle
  • Designer(s): M Scott Verne, Wynn Mercere
  • Flying Buffalo, 79 pages
  • Retail price $4

Mercenaries, Spies, & Private Eyes

Includes the Jade Jaguar solo adventure
  • Designer(s): Michael A. Stackpole
  • Flying Buffalo, 153 pages
  • Retail price $11

Mugshots - Pacific Clipper

A complete 84-page MSPE solo adventure
  • Designer(s): Dave Arneson
  • Flying Buffalo, 85 pages
  • Retail price $4

US$79 of classic RPG ebooks....

...But you pay just $7.95 for our Starter Collection of six complete .PDFs, including including three CityBooks, two Grimtooth's Traps collections, and Treasure Vault. And if you pay more than this offer's current threshold price ($22.76), you'll level up and also receive all ten titles in our Bonus Collection, including Mercenaries, Spies, & Private Eyes, four more CityBooks, two more Traps collections, and two newly added titles, City of the Gods Map Pack and Case of the Pacific Clipper.

(If you bought this offer during its original July 2017 run, you'll find City of the Gods and Pacific Clipper on your Wizard's Cabinet download page. When you buy a Bundle of Holding early, you never worry about missing titles added later -- even much later.)

Bundle of Holding titles are always absolutely free of DRM, so you can move and copy them freely among all your tablets, laptops, and smartphones.

Catalytic reaction

Here's what others have paid for our bundle

Number of bundles sold
Total contributed
Threshold (level-up) price

To keep the starting threshold price from rising too quickly, we calculated it based on 400 fake sales at $17.95 each.

POTENT CATALYSTS: Our most generous customers

  • Wealthy:
  • Well-connected:
  • Urbane:

Other leading citizens:

How to instantly get your Catalyst Bundle:

Step 1

How much will you give?

The tabletop roleplaying ebooks in this Catalyst Bundle offer retail for US$79. Choose a price you like, in US dollars (minimum $7.95). Make sure you choose an amount greater than $22.76 to LEVEL UP and gain the bonus titles.

Just a note: This amount is below the threshold price, so you're receiving only the starter collection. To LEVEL UP and get the BONUS collection, please choose an amount more than $22.76.

Your payment is generous! To join the top donors on our "Potent Catalysts" leaderboard, please enter a publicly viewable name (limit 30 characters):

Step 2

Collect your Catalyst Bundle right now!

Please enter your email address.

Please enter a valid email address.
The email addresses you entered do not match!

Our oath of fealty: We'll never sell, rent, or give your address to anyone else. We'll never use your address for anything but the Bundle of Holding.

Hmm, it looks like Javascript may not be running or disabled.
Step 3

Buy the Catalyst Bundle using one of these methods:

These payment processors accept all major credit and debit cards. PayPal also supports payments from your bank account. The payment processor deducts a fee from your payment before we receive it. Your credit or debit card statement will show "BundleHolding," "Bundle of Holding," or "BookBundle," depending on your payment processor.

Step 4

Check your email!

Next, check your email. The link to your Catalyst Bundle download page may take a few minutes to arrive. Add to your approved sender list, or check your spam filter. If you don't get a link in an hour or two, contact us:

Then visit your Wizard's Cabinet page, link up with your DriveThru library, and discover, or revisit, the wonders of the Catalyst line.

Spread the word!

Tell all adventurers about the Catalyst Bundle