As good as the remake, even if there's a slight difference in physics. Unfortunately, there's HEAVY lag on level 20, making it damn near impossible. I know this may be a fault of the very hosting, but not being able to play the last 11 or so levels due to such a roadblock is very OUCH-inducing.
Also not being able to see the other fella's world, unlike the remake, is a bit funny =^Meow^=