Hello, everyone!
I asked around on our Discord server for games recommendations. Here's the list:
GRAN says any of his games are available:
https://gransvoid.itch.io/galaxy-fighterx
https://gransvoid.itch.io/pantheon-planning
https://gransvoid.itch.io/the-ever-play-fey
https://gransvoid.itch.io/every-wizard-has-a-hat
Lucas Rolim also clears all of his games to be used in the Jam.
You can message him for a key if you want to make content for his paid games!
https://lucasrolim.itch.io
B.A. Reyna says he'll be hacking some games and you can hack these:
https://mundosinfinitos.itch.io/
Igor Coutinho has Helmet up for game:
https://igor-coutinho.itch.io/helmet
Alexander Sheep welcomes content for What a Pickle! and Quinta à Noite:
https://alexandersheep.itch.io/whatapickle
https://alexandersheep.itch.io/quintaanoite
Emanoel Melo has the impressive CBR+PNK:
https://emanoelmelo.itch.io/cbrpnk
Valensa has a Digital Dracula waiting for your blood and data:
https://v-for-valensa.itch.io/cyber-castle-digital-dracula
TheGiftOfGabes could use new stuff for their FantasyPunk:
https://thegiftofdice.itch.io/fantasypunk
GaboKerr has dueling bards for you:
https://gabokerr.itch.io/duels
Maik cleared up his Moon Elves for new content:
https://maik-malaik.itch.io/moon-elves
Rodrigo also has a bunch of games for you to choose from:
https://rodrigo-o.itch.io/
Tragos Games brings you their games too:
https://tragos-games.itch.io/tyst-borg
https://tragos-games.itch.io/meta
Ivan has an SRD and a rule-setting waiting for extra stuff:
https://ivancoluchi.itch.io/3dr-system
https://ivancoluchi.itch.io/haltera
Kapithan suggests you pile your dice and have fun doing it:
https://kapithan.itch.io/dice-pile-system
Walter Licínio has this player-centered stories SRD:
https://fractalrpg.carrd.co/
Duamn has all this incredible stuff that you can work with:
https://mrdrhobo.itch.io/world-of-blades
https://mrdrhobo.itch.io/and-venture-forth
https://mrdrhobo.itch.io/deep-nightly-fathoms
Wendi has amazingly weird games for you to hack:
https://wendiy.itch.io/marvelous-mutations-merry-musicians
https://wendiy.itch.io/apotheosis-janitors
and last but not least my own Ruin Explorer is up for content or hacks!
Just contact me asking for a key if you don't have it!
https://manchae.itch.io/ruin-explorer
Do you have anything not listed here? Feel free to add to the list!