Yeah and I don't fault you at all for that. Very few of these games have in game tutorials and this is something I'm saying now without having done one myself for my game (and now I wish I had, it's one of my game's weaknesses LOL) so lesson learned all around.
Once you get how your game works it totally does work and it's a fully fleshed out game with very few bugs so it's honestly awesome, ESPECIALLY for your first jam!