Hi! Amazing! Looks like fun!
Oh, and I know it's chill and all, and I actually appreciate the approach and I wouldn't even dare to suggest to change the rules or anything but I've read: "OK, but I cannot really make a platformer or a 3D game with these assets…" and I'm like: I've seen a few retro-style, 3d games made with these assets, so it is possible :)
Good luck with the jam! I'll keep eye on it!