In terms of the gameplay New N' Tasty! is the same as the original to a large degree, but the flip screen scrolling is, obviously, gone, and subtle camera movements have been added to show more of the environment. The faster Abe moves, the more the camera shifts, up to around 15 degrees.
The level design and puzzles are 80-90 per cent the same as in the original. Gilray provided an example of a difference. "In the original game, the fifth screen into it, there was a sleeping Slig. When you walked into the screen he woke up. To reset it you just walked off screen and came back on screen again creeping. We don't have flip screens any more, so we've made it so he times out. Say he walks around for 10 seconds and you haven't moved, he won't have heard anything and will go back to sleep again.