The Far Roofs

Hardcover
 
The Far Roofs is an original roleplaying system and bundled campaign using pens or pencils, paper, six-sided dice, ten-sided dice, playing cards, and a bag of letter tiles. It's complete in one volume: with this one book and the equipment above, you'll have everything you need to play.
Here's how it works!
To resolve day-to-day actions, players will roll five six-sided dice ("5d6") and look for matches:
Pairs up to the Trait they're rolling represent "success"—for instance, a Trait of 2 succeeds with a pair of 1s or a pair of 2s. 
Rolls with no matches at all are "critical failures." 
Rolls with 3+ matching dice give "critical success." 
To address bigger-picture dilemmas, players draw letter tiles and cards over the course of the game.
They'll build words out of those tiles to represent and summarize new understandings, or, to shape ambiguous and flexible outcomes.
They'll assemble poker hands out of those cards to represent long-term efforts or gambles; the quality of the hand determines how well such things go. 
The included multi-year campaign takes the characters from their first tentative steps on the roofs, through confrontations with moon-stealing monsters, world-shaping machinery, and dead gods, to a final grand encounter with the numinous beyond.