Very cute! And I really love the whole infecting mechanic, I think it's a really cool take on the theme. You can ignore this if you like, but I've got a couple of tips for godot. 1) 'normalising' vectors will make it so that your diagonal speed isn't faster and 2) look into y-sorting for the sprite (so you can have your cute lil slime either walk in front or behind of the trees). Sorry, not trying to nitpick or anything, it's just that this is stuff I learnt really recently and got excited to share, lol :)