Are multiple people allowed to work on an entry?

Also, are we allowed to use prexisting game engines?

Yes multiple people can work on a entry, and the contest is to see what you can do with Clickteam Fusion 2.5, Thus your entry must utilize it. If you have any questions on Fusion let me know! Hope to see something from you and your team!

https://www.youtube.com/watch?v=wOEULX7sW90 Here's a sample of what we've made. Of course, we won't be using it for the contest.

I can not put my game on your page (itch.io/jam/iwanttocreate) help me pls

I'm french

My Game : https://Funky51.itch.io/spyramid

That link isn't working my friend.