The pixel art for your arcade machine is very nice and the way that you have to collect a coin for it is a great concept. The mini game itself is nice and simple and plays great. When finishing the mini game I would of liked to see a "you win" screen similar to how you see a "you lose" screen but other than that, this is wicked. One more thing that I think would be good to add is to make the arcade machine a jump through platform so that you can stand on top of it. I'm also not sure about the slime going behind the machine but it could be cool if he is hiding from something. All in all, I had a great time playing what you have created