This is a great conversion, looks much better than the version it's based on.
But I have a problem with level 21 and 24 mayhem - I don't think they can be completed.
These two levels both have slight differences from the NES version:
in level 21, you are not given the same numbers of each lemming type, making the level uncompletable
in level 24, the gap between where you come out of the structure you bash through and the surface below is higher than the NES, killing the lemmings from the fall which does not happen on the NES
also level 25 is much tougher than it should be due to an extra layer of netting on the right hand side above the exit - only managed to complete that after much trial and error, even after watching a playthrough of the NES level.
If someone is able to complete mayhem 21 and 24 I would like to see a video, as I don't think they can be done on the Pico 8 conversion.

