Let's make TTRPG supplements and expansions for games that are not TTRPGs. Pick any game that isn't and does not have a TTRPG adaptation and make a rules supplement, setting supplement, sourcebook, or splatbook as if it was a TTRPG. Try not to make a full TTRPG adaptation of the chosen game as that's not quite in the spirit of the jam, but hey if you end up doing that, good for you.

Some rules:

• Don't use any copyrighted or trademarked material without permission. Please check before using any material that might be deemed as such. Even if you are pretty sure you have a case of fair use, try to err on the side of caution.
• No prejudiced or hateful content will be accepted. They will be removed at the admin's discretion.
• Feel free to submit games that you've already made previously.

Here are some games that are arguably not TTRPGs:

• Tag
• Go Fish
• Chess
• Catan
• Glory to Rome
• Magic The Gathering
• Pokemon
• Tetris
• Half-Life
• Badminton
• That game where you throw a ball at each other you know the one