Looks pretty nice from the video, though I haven't yet had much of a chance to play it. What I did notice, however, is something right at the start of World 1-1:



If you let the mushroom go under those mushroom-shaped platforms and go after it to get it, you're stuck under them and have to kill yourself - you cannot go back because the screen's already scrolled too far, and you can't make the jump across the water because you hit the edge of the platform above and bounce right back into the pit. Hope my explanation made sense.


____________________