itch.io

Yes, you can. However your chances of someone continuing your project is pretty low since most people use game engines.

I would assume not since scratch is more of a platform then a game engine.

Are we allowed to make/download our own sounds or do we have to use sounds in the Kenney website?

very fun game

Great game! The idea is great, its very fun, could be made into a full game! Definitely getting top 100.