Generally, I tend not to go for this game genre, but it was a real treat to see your excellent artstyle juxtaposed with this interesting 3D Unity game world. I was surprised to find myself getting stuck for a little while in the middle of the "game" and having to think about what I could have left undone. As usual, the characters line right up with your classic whimsical style and were interesting to meet and interact with. I also had some laughs about the jack-o'-lantern that got in the way of most of my screen as I obsessively carried the stupid thing around, trying to see if I could find a place to make use of it.
I'm not entirely sure, but I had the ability to repair the bike before finishing the "game" and getting the ending screen, and that has me curious as to whether that was intentional or a sort of sequence break. I wasn't about to try and end the game early, but I wouldn't be surprised if you had some nasty game-over screen cooked up if I tried to leave before doing everything else that was left to be done.
Oh, and one more thing... Happy birthday! I hope today has been going well for you, and I wish you many more to come!