I've had a few requests to add more games to the list on the jam page. Rather than spend all my time editing that page, I wanted to open this space to you to share the games you're excited to write for.

I’ll put up my game Liminal Horror. 
Liminal Horror (a modern cosmic horror hack of Cairn) has cc-by-sa 4.0 license (as permissible as it gets) and a fully searchable online core mechanics/ srd with base game files. It adds a stess and stress fallout to boot.

website: https://goblinarchives.github.io/LiminalHorror/

I'd love to be included too! 

Mine is a non-serious Sci-Fi game, with a lot of aliens, and percentile based system. 

I've made some community copies available for this as well, so please don't feel you need to pay to join in.

https://paulcat.itch.io/weirdspace

I'll be writing at least one adventure for my deadly, OSR-adjacent starfighter game Hotshots. I've found it works well for classic-feeling dungeon crawls and journeys with the twist of piloting a super fast starfighter the whole time (there are totally optional rules for doing stuff outside of your starfighter too).

I'd be totally cool with other people making adventures for it. The game's free and licensed with the CC BY 4.0 license (so just put something like, "this adventure is for Hotshots by Mitchell Daily," in there and you can do whatever you want with it). It's only 3 pages of rules (plus ship types and character sheets).

https://mitchelldaily.itch.io/hotshots

Was thinking of using FUDGE/FATE.

Down We Go releases it's 3p license tomorrow and we would love to have folks make stuff for it!

Really looking forward to the stuff that'll come out of this! As for other games that might benefit, I humbly submit my own: 

https://sivads-sanctum.itch.io/in-the-light-of-a-setting-sun-saddlebag-edition

Into The Odd has a licence/SRD here: http://moto.lostpages.co.uk/

Down We Go just opened up it's 3p L ttrpg.link/TWG
Dungeons are 1 page, adventures are typically just 2. 
Super easy to hack. Game is at ttrpg.link/DWG

Currently writing for my own game (apologies... but someone has to..) PARIAH

Free version is here:

https://atelier-hwei.itch.io/pariah-art-free

Thinking about writing for Gratitude: A Horror Game, since I'm also hosting a jam for it that partially overlaps. But we'll see what title I get and what direction I'm pulled!

https://alrine.itch.io/gratitude-a-horror-game

I'm writing my entry for my game DURF so I'm dropping it here in case anyone else would like to give it a go :)
You can reach me on Twitter (@EmielBoven) if you have any questions!

I just uploaded an adventure for  DURF !
It involves slugs, mushrooms.. and a Yellow Stone as the Random Generator commanded. 

Comments and feedback are welcome.

https://neonrelic.itch.io/lost-to-a-yellow-stone