This bug, although I don't intentionally try to reproduce it, pops up regularly by accident. I went ahead and fixed it myself for my copy, but I thought I'd better report it since it happens quite often in levels featuring zombies.

Setup:
Activate the nuke while the next lemming still queued to spawn is a pre-assigned zombie.

Expected outcome:
Once all lemmings die, the level ends and transitions to the postview screen.

What actually happens:
You get soft-locked even after all lemmings have died.

Reason:
StateIsUnplayable(basically the level-end check) treats a nuked level as still playable if UserSetNuking and CheckIfZombiesRemain are true, which is fine. However, CheckIfZombiesRemain(which only ever gets evaluated when UserSetNuking is already true) also checks the next lemming still queued to spawn and whether it was a pre-assigned zombie. It then keeps checking whether that permanently frozen queue slot(due to the nuke) happens to be a zombie, and reports that "a zombie remains" for a lemming that can no longer exist, causing StateIsUnplayable to remain permanently false.

Fix:
Just remove the spawn-queue-peek block so that it only considers zombies that are actually alive in the level at that moment. Its sole consumer is StateIsUnplayable, which in turn only determines whether the level should end, so there should be no physics side effects.

August 24, 2026 stream is over, and I show the solution to Moon 7, solved the remaining 13 levels of the Moon rank, and the first two levels of the Planet rank! Replays attached.

The new levels to me were Moon 8 - You Need Blockers This Time, Moon 12 - The Prisoners, Moon 14 - White Wonder, Moon 18 - Direct Misdirection, and both Planet levels, Planet 1 - Fourtissimo and Planet 2 - Slow Down, Walkers!. The Prisoners and Fourtissimo were my favorites! Though I'm not sure if my solution for the latter is intended. Also, I heard in Icho's and Simon's NepsterLix stream that it was one of the levels that Simon didn't solve, but I only watched the first minute or so of it. I will check it out! At the same time, it's from 2016 or so, but even then, should be a nice, entertaining watch! Not sure if Planet 2 is intended as well, though only one part of my solution feels a bit hackish.

Both Moon 14 - White Wonder and Moon 18 - Direction Misdirection seem to be backroutes.

Moon 19 - Miner Preservation Society Recently got backroute fixed, and IIRC this solution I found is the exact same one I use in NepsterLems.

Moon 15 - Construction Zone Here I remember abusing the digger on the NepsterLems version to cheese the level Seems completely solid here for NepsterLix. Great level!  

Moon 11 - Horror Ping-Pong and Moon 16 - Don't Feed The Frogs! are both in NepsterLems as well, albeit slightly different, since for the former has a runner skill in addition to the same skills in NepsterLems, while the latter has the platformers all replaced with builders. From memory, I use a timing based solution for the latter in NepsterLems thanks to how you can fiddle with the RR during gameplay and also with the differing platformer vs builder mechanics between the Lix and NL engines.

Moon 13 - 50% is not enough is Planet 13 in NepsterLems and I remember using an extremely heavy timing based solution in the NL version of the pack. Doesn't seem to work here in NepsterLix as you cannot mess with the RR/VSI during gameplay. It was also my very first major roadblock of Nepsterlems, as well as the level that caused me to quit the NepsterLems pack for a while before coming back to it much later in the future back in 2020. In fairness, I started playing NL content in 2019, for which NepsterLems was one of the very first level packs I played, along with Lemmings United, so I wasn't as experienced back then and hence roadblocks came up very often for me!

Can't wait to stream more of NepsterLix in the future. Looks like I'm just finding my stride and I haven't lost too much of my touch with Nepster's levels despite it being 3 years since I last played and solved all of NepsterLems!      

Stream is over and was on August 24, 2026:

https://youtube.com/live/6ic1KuGpoA8?feature=share

Planning to stream more NepsterLix in an hour, Monday, August 24, 2026 at 5PM PST (00:00 UTC). Sorry again for such a short notice. I generally can only stream in the late afternoon, which unfortunately is a pretty bad time for European residents, as it would be midnight or past.

See you if you're able to make it. I show the solution to Moon 7 and then we see how many more levels of the pack I can solve from there!  

I really like this. The hair is so nice and messy. 

Quote from: Kapus on August 24, 2026, 11:48:18 AMI don't personally find it very necessary. The replay feature already lightens the weight of most execution-based mistakes. It's really slow on longer levels, yeah, but I'd rather have a faster speed up button than a rewind.

Agree there

I've read a lot about different clones, ports and sequels of DOS original-themed Lemmings games, of course with their patches and editor tools. But somehow I wonder why, for me personally anyway, that the DOS port compatibility is still only what excites me the most. Namely, how excited I was with Namida's LemSet and LemMain DOS-compatible editors as opposed to NeoLemmix or DOS 3D Lemmings Editor. So I came up with a breakdown:


NeoLemmix/Lix:

[y] 1 - Original gameplay with addictive graphics
[y] 2 - Highest customization amount
[n] 3 - Original antique scent
[n] 4 - Requires computer knowledge to run


AMIGA Lemmings:

[y] 1 - Original gameplay with addictive graphics
[n] 2 - Highest customization amount
[y] 3 - Original antique scent
[y] 4 - Requires computer knowledge to run


DOS Lemmings:

[y] 1 - Original gameplay with addictive graphics
[y] 2 - Highest customization amount
[y] 3 - Original antique scent
[y] 4 - Requires computer knowledge to run


DOS 3D Lemmings/Lemmings 3/Lemmings 2:

[n] 1 - Original gameplay with addictive graphics
[y] 2 - Highest customization amount
[y] 3 - Original antique scent
[y] 4 - Requires computer knowledge to run

The most obscure thing on the iceberg that I recognize is the japanese lemming nudity, which isn't nearly as scandalous as it sounds!

I don't recognize anything past the 6 layer. I'm really curious what so many of these could be referring to.

Thank you for the reply! I'm less familiar with PICO-8 so I wasn't aware (though I have friends who are big nerds about it).

I'll definitely take my time running through the levels in this port. Good food for my Lemmings cravings, lol.

Thanks so much for the kind words! Really fun to read your comments and see what stood out to you
As for the player 2 controls: those are basically the built-in PICO-8 keyboard controls itself, so there isn't any extra meaning behind them in this case.