Am I understanding correctly that credits are disallowed outside the jam's submission page?
If someone stumbles upon the game from outside the jam I would still want them to know that the musician who made the soundtrack has a Soundcloud they can follow, or link to a team member's Artstation, so I would at least want to show those on the game's main page, if not in-game.
That's a valid concern. I would suggest erring on the side of caution re: the rules and then going back to the project after voting and adding what you need to be there. That said, I don't think there's anything against the spirit of the rules to include the credits in the main page text, it's just that you will be asked for them in submission and I don't want people to do double work if they feel they need to write it all twice.
