On the right side of the mosaics 5 pieces appear at once, is there any way to see the other pieces? It would be good with the mouse wheel, or exist some way?

The game looks like i have a lower resolution shown than my monitor has. Some games launch in the wrong resolution and you just change it, but this game doesnt offer an option to do so.

I'm guessing the developers just thought this sounded like a nice, round number to give people to shoot for, but in practice it makes no sense. You'd have to play through the whole game like three times to get that many coins. I like the game a lot, but I don't want to play it more than once. (For reference, I just finished the water stage (5 out of 6), and I don't even have half a million coins. I definitely won't have half a million before I finish all the puzzles with three keys each.)...