Previously known as The Lost Levels DX, this is an upgraded version made to work on modern emulators, and has a few audio problems fixed. There is little to no change in gameplay, so if you've played this hack before, there's not much new for you.
This is a remake of The Lost Levels in the SMW engine using SMB3 graphics. Worlds 9 to D are included.
Pretty much what I said here applies for this one as well. It's a good remake, although some enemies and mechanics could've been implemented as well. Graphics are always good, except for some minor cutoff. A good hack if you want to play the Lost Levels but you're unable to complete them with SMB1's silly gravity (like me).