Hey! I know how you feel. The time limit on game jams can feel overwhelming, especially when you are pushing the envelope of what you are capable of. This is basically scope creep.
First, don't give up! your game doesn't have to be the best game ever. we're not competing, we are just trying to get better together!
Second, try to limit the new things to try to 1-2 things for a game jam. if you have time try others.
Third, this is something I started doing, but you can do even at this point to help re-evaluate. Make a list of all the features you want in your game. Then make a list of the subset of those feature which are core to the gameplay loop. Then, make a final third list of the non-essentials in order of which you want to implement the most. then you knock out the essentials and make an MVP, and start adding the non-essentials until you run out of time.
Is this one of your first jams? It's totally normal for this to happen, especially if it's one of the first times you're participating in a jam.
Over time, you'll develop a better sense of what you can create with your skills during the jam period.
And don't worry if you can't submit the game for the jam, even if you haven't submitted, you've definitely improved some skills in these last few days. Or perhaps submit what you've managed to create, and then work on the project for a few more days, but don't invest too many days, weeks, months, invest just enough to deliver the idea you had for the jam.
