Unfortunately your game is not playable at the moment
You either want to zip the .exe with the pck and upload that OR
re-export the project while checking this checkbox
That's in
Project > Export
then inside the Windows Desktop (Runnable) Preset under the Binary Format section you hit the Embed PCK checkbox and re-export.
I would just zip up every file that the export produces (even if it is just a single .exe to be honest) It just makes it easier to share.
Anyways, I will check back here to see if I can play your game :) Hopefully I can.
If you want, you can also check out the game we made for the jam! It's a fun lil driving game with some combo mechanics and an online leaderboard. Looking forward to playing your submission