A downloadable game

Buy Now$15.00 USD or more

With the Battlements and Dungeon at their backs, our heroes now delve into the mysteriously silent Keep of Tour Toriel.  Its corridors and chambers, chiseled deep into the mountain's bedrock, are filled with traps and secret passages designed to deter invaders just like our heroes.  And in the highest levels of the keep, the surviving castle residents have collapsed into a fevered, jealous worship of a power they don't even understand.

The Cultists' Keep in Tour Toriel features nine encounters ranging from challenges to action sequences, all in 57 pages.  The adventure can be played in one epic session (4-6 hours) or easily divided into two to four shorter sessions.  

This campaign is a standalone Cortex game.  All the rules you need to play are included in this and the previous adventures (Dungeon and Battlements).

Includes rules for character creation using six archetypes: the Bard, the Cleric, the Fighter, the Ranger, the Rogue, and the Wizard.

The Cultists' Keep in Tour Toriel and the rest of the Ascent to Prime campaign is rated PG and E 10+ for fantasy violence.

Ascent to Prime is flagship of Keystone Fantasy Roleplaying.

Learn Cortex by Playing Cortex

Keystone is Primed by Cortex, the award-winning world-building tabletop RPG system for forging unique, compelling game experiences from a set of modular rules mechanics.

The Cultists' Keep in Tour Toriel is the third adventure in the Ascent to Prime campaign, which teaches the mechanics of the Cortex Roleplaying Game using an epic megadungeon as its classroom.

The Cultists' Keep focuses on SFX and XP.  SFX are exception-based special tricks that allow players to finagle their dice pools or contribute directly to the store.  Milestones are the players' means to collect experience points to advance their characters' abilities.

Keystone Fantasy Roleplaying

It all starts here, but where it ends is up to you.  The characters you play in Ascent to Prime can seek out further adventures in the wider world of Keystone Fantasy Roleplaying—or retire after saving the world and leave the heroism to new characters of your own creation.

Keystone Fantasy Roleplaying is a modular roleplaying game that focuses on tools you can use in your own game alongside the wild inspirations of your own imagination.

The Ascent to Prime is only your first step into a vast, exciting world of adventure...

StatusIn development
CategoryPhysical game
Rated 5.0 out of 5 stars
(2 total ratings)
AuthorMiriam Robern
Tagsascent-to-prime, cortex-prime-rpg, keystone


Buy Now$15.00 USD or more

In order to download this game you must purchase it at or above the minimum price of $15 USD. You will get access to the following files:

The Cultists' Keep in Tour Toriel Book 30 MB
The Cultists' Keep in Tour Toriel Book (no BG) 15 MB
Keystone Archetypes 18 MB
Keystone Archetypes (no BG) 16 MB

Development log

Leave a comment

Log in with itch.io to leave a comment.