Much better than the trailer =D
It's much better than the trailer you did previously, but it could still use some improvements.
You can go through all the levels by right-clicking and selecting Play or Forward. And it gets a bit confusing if you go through the left side of the screen, because it returns to the main menu and another music track starts, so it gets all mixed up.
The jumps aren't really "physically correct", but you can live with it =p
Sometimes you jump too high off the screen using flies... I think it happens when you jump using one and hit another one while you're going up.
Apart from that, it's a good platform game =)