You made a high score board for a jam ! That's technical and nice, I like it !
The game is quite functional, no major bugs, seems to be able to go a long way. The upgrade system of monsters and the train both seem bugfree and meticulously implemented, bravo
The visuals lack a bit, especially for the monsters, but obviously in a jam with only on person to handle the art, it's not easy to have something amazing visually.
Good team work and solid entry nonetheless ^^
(i didn't know of Nila Wafers ; my goal is now to find some in France to try them :B)