I really like the graphics. They are simple, but they mean a lot. I could not figure out what I was meant to do. I think I was meant to protect the gems, but I couldnt shoot or stop them.
Yes I could do communicating to the player the aim of the game. Full disclosure, as a solo programmer the art and audio assets were found found online.
Thats part of the beauty of a Game Jam though :) Bashing together some random art assets online and stuff, so no critisicms for that. You did a very good job!
