In case you’re in the mood for a mystery with a little Weird West flavor and lots of interwoven secrets, the latest beta version of my Dungeon World adventure Stuck in Jawbone is available pay-what-you-want.
IMO, its coolest feature is the sheer number of entry points into the central mystery. Because the mystery has several interrelated subplots, players can follow the clues that interest them, in any order, and the trail will eventually connect with the others. Investigate a haunted temple, a sewer full of invasive predators, or a sinister magical factory. Get involved in local family dramas. Interact with sad ghosts, an old man who keeps challenging you to duels, or a girl with a secret identity. They all have clues, and they’re all related – but it might not be clear how until the end. In my playtests, it takes about 4-5 sessions to get there, and the clues start linking up around the middle of session 3.
Stuck in Jawbone is designed for use with Dungeon World, but should work fine with OSR systems with minimal conversion. It's still in development, but is playable; it's just missing some maps, flavor text, and tables that I intend to add eventually. If you try it out, please leave a comment; I'd love to get some feedback while I work on the next version!