The GameMaster's Apprentice (2014)

From publisher blurb:

Sooner or later, you're going to need more story!

The GameMaster's Apprentice is a genre-and-system-neutral deck of cards that can be used as either a supplement for traditional tabletop RPGs or as a complete game engine for GM-free solo or group RPGs.

On each card is a set of fourteen individual randomizers; with 60 double-sided cards, you can generate literally millions of possible adventures, all without having to hunt through a book or PDF for a single table!

With these cards, you can:

• Instantly generate NPCs with randomized names, motivations, and backgrounds.
• Create random events or story seeds.
• Provide sensory details or random loot for characters searching or stealing.
• Run games without a human GameMaster!

And more--they even work brilliantly as creative writing prompt generators.

Comes in Base Set, Demon Hunter's, Sci-Fi, and Horror variations, with more on the way.

See also The GameMaster's Apprentice Instructions.