yea =) but 2.8 gb >_<
Yes and final/fully version is even bigger. That's why because almost 30 levels, some of them are big and also 3 open world where are lot of stuff that makes project very big.
And because there are open worlds and few bigger levels that's why project is big. I try to make it more smaller. And itch.io version is older beta version where are missing newest/best levels. Also newest version has some polished stuff and settings menus
Try to unpack it! It's over 6 gigs... o.O :D