I've downloaded and installed all custom ones but only attemped a few except for redux which is a collection of various ports of lemmings which I completed. also each level in redux uses its correct music even the nes or psp levels. but I removed the talismans, since they were not in the originals levels. This took a while to do, I wish there was a way to get music faster into neolemmix levels, much quicker in superlemmini.