Pelgrane Press has been busy this week, releasing System Reference Documents (SRDs) for both Gumshoe and the Archmage Engine which powers 13th Age. There's also a fan-made HTML version of the 13th Age SRD.
Evil Hat Productions published licensing options for Fate Core and Fate Accelerated Edition (FAE) about 5 minutes before someone asked about it. Uncanny timing.
Monte Cook Games released the licensing policy for Numenera recently. It looks like Charles Ryan handles all the licensing details as MCG's COO, so stay on his good side.
Margaret Weis Productions offers licensing for Cortex Plus so you can publish that new Leverage hack.
Atlas Games released the Wanton Role-Playing System (WaRP), which powers the Over the Edge RPG, under the OGL.
- d20 (HTML SRD at d20srd.org)
- d20 Modern (SRD Wiki on ENWorld)
- Pathfinder (HTML SRD at d20pfsrd.com)
- Pathfinder Modern (HTML SRD at d20modernpf.com) - Basically d20 Modern hacked from the Pathfinder rules.
|How did I miss MongTrav?|
Other SRDs from the comments:
- Traveller (the Mongoose edition) has an HTML SRD. You can also download the developer's kit.
- Swords & Wizardry offers an HTML SRD.
- Mutants & Masterminds has a superheroic d20 HTML SRD.
- There's even an HTML SRD for Dungeon World, released under Creative Commons.
Clash Bowley's StarCluster 3 comes with a developer's license and a "Powered by Starcluster 3" logo in the Developer's Edition PDF.
Powered by the Apocalypse isn't so much official licensing as "talk to Vincent about using or hacking Apocalypse World".
I looked for something about licensing the One Roll Engine, which powers Godlike and Nemesis and Reign, but they'd rather you wrote for Arc Dream directly. Here's the RPG.net forum thread with Greg Stolze for reference.
And just so I have it handy, here's the list of Creative Commons license types.
If you're interested in finding more free, open, or shareable game resources, start with FOSsil Bank's Tabletop Games (Libre) page. Also 1,000 Monkeys 1,000 Keyboards if you feel like drinking from the free (mostly untested) RPG firehose. And we're spitting distance from November when NaGaDeMon kicks off as the game designer's counterpart to NaNoWriMo.
There's always more. What did I miss?