I enjoyed that I could actually play the game, and I think it has a lot of promise. I don't know if I played it for long enough, but I got to 40 pieces of trash before ending. Was I supposed to be able to get the yellow pieces too? I am not sure what you have in store for the future, but my suggestions would be, a system where after you hit a goal of dumping an amount of black trash, you can get yellow trash and reach a new goal of dumping an amount of black and yellow trash, and so on. I think a speed up and/or jump function would be cool, and a main menu and pause menu would help too! Overall, great prototype!