im working with scratch so i feel i have a bit of a disatvantege and also i am able to convert it to html5
You shouldn't feel like you have a disadvantage. There is still very much you can do in scratch.
Game Engine is just a tool for helping you make a game, it doesn't matter what tool.
The only thing that matters is that you can build things you want to build in them.
Hope you have a splendid time in this jam! :)
- Sab