The Lost Levels is a remake of the Japanese version of Super Mario Bros. 2, which was later released in North America as The Lost Levels. Being that 1.6 Mari0 didn't have all the features of the original, it isn't perfect. Interestingly, there is no mention of making a port for SE.
As Mari0 is based on SMB1, the following objects were omitted:
- Poison Mushroom
- Red Piranha Plants
- Ceiling Pirhana Plants
- Wind (replicated with use of Speed Gel)