I appreciated that I could play this on my phone. If I were to offer any improvement ideas it'd probably be nice to see some text about the coins before you clean them up, since there was a quiz about them with no way for the player to know the answer in game. The same text setup you uad the memory machine use could've been like a manifest or something for the coin sets. Another minor improvement would be to clean up the jaggies on the coins, but I get time probably meant hurrying there. Otherwise, I found no bugs, everything played nicely. Nice job.