I would do a search for historical forum posts by DragonsLover. I don't know if he did this track specifically, but he did a lot of Lemmings midis back in the day.

@MASTER-88
I've pm'ed you my solution to "Level 19 Decimation".
It seems intended to me, but I first wanted your confirmation that it's not a backroute before posting it.

It took me an hour, but let's say a lot of people trained me for this particular type of solution and I got a nose for when to suspect it.

I wouldn't call it too precise as well! There are a few tight timings, but all in all it's still ok due to the level not being too long.
Great level! 
I my case it was very hard, but I've seen a lot worse as well. Difficulty is a bit of a perspective thing anyway.

Stream is over!

Recording will remain for 14 days at: https://www.twitch.tv/simonnaar

-- Simon

It's definitely not the easiest audio format to work with, but it has that old school charm and is bursting with possibility.

Good luck, give it a try!

Thank you so much! I'm not familiar with MOD, alas, I'll try my best ;-)

Here's the playbacks I used. Maybe it's because two are for the same level?
Anyway, thanks for Simon for the idea to demonstrate it on stream.
Can you post a link to the github, then I can raise it as an issue there.
Here's the levels I used: https://www.dropbox.com/scl/fo/8p6c245zqu8veblff5dsj/AKC_TWGEs3rCKCKZNkMgkEE?rlkey=5bbnm98vfpz5iit2haxqq1lwr&st=6ea1zxue&dl=0

https://www.twitch.tv/videos/2808243186?t=1h21m43s

Excerpt starting at 1:21:43 in the livestream. Video will remain available for 14 days.

-- Simon

Thank you, that is still very useful even without a video.

The Level 5 planter bug description helps. If only one Fizzle turned around at the end point of a plant while all others passed the same point correctly, then it may be related to a very specific position, collision edge, or state of that individual Fizzle. The note that it may have been the same Fizzle that created the plant is especially interesting. I will keep that in mind when checking the planter / bridge logic.

It sounds like the end of one bridge segment may sometimes be treated like a solid edge or blocker for one Fizzle, while the path is valid for the others. That is definitely not intended. Even if it is rare, it is the kind of bug that can become annoying in later levels, so I will investigate it.

About pausing: I understand your point much better now. Coming from NeoLemmix, assigning skills while paused is a very natural habit, and I can see how Fizzles feels different or awkward from that perspective.

For Fizzles, I still want to keep the core direction mobile-first and more real-time than NeoLemmix. I do not currently plan to make paused skill assignment part of the main gameplay, because that would change the feel of the levels quite a lot.

But your concern about the moving skill popup is very valid. If later levels offer four or five possible skills at once, clicking the correct icon above a moving Fizzle could become too fiddly, especially on touch devices. That is something I need to handle carefully.

Possible solutions could be larger skill buttons, a more stable popup position, better spacing, limiting the number of visible choices depending on context, or another mobile-friendly selection layout. The goal should not be to make players fight the interface. If a level is difficult, it should be difficult because of the puzzle decision, not because the correct icon is hard to tap.

So I will keep the pause design as a separate question, but I fully agree that the skill selection UI must stay readable and reliable once more abilities are available.

Thanks again. This is very helpful feedback, especially because it points to problems that may only become obvious when the game grows beyond the first tutorial-style levels.

I've replied to the reported issues with Playback Mode in NLCE here.

From this topic.

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Quote from: darkshoxx on June 29, 2026, 09:28:35 AMI have tested this with a folder that has 3 replay files, 2 for the same level. If I choose Playback Order by Replay, the levels are started, I see a purple "R" but no skills are selected, all the lemmings die 
Instead if I choose "By Level", everything works just fine.

I can't reproduce this. Please could you send over the replays that you used to test?

Quote from: darkshoxx on June 29, 2026, 09:28:35 AM- There is no default Playback Cancel Hotkey, and no easy way for me to set one, so there's just this field that remains empty.

Options (F3 from main menu) > Configure Hotkeys > (Choose a key to edit) > Choose 'Stop Playback Mode' from the dropdown list*

Are you carrying over your hotkeys from NL? If so, a key won't have been configured for cancelling playback, hence the blank space. I should do something about this; we can set a default so that some key is shown here, and the user can be prompted to set their own the usual way (i.e. via Configure Hotkeys).

*Side note - admittedly, choosing key-first-then-action is a less unintuitive way to set hotkeys than choosing action-first-then-key, particularly if a user isn't aware of what actions are available. It may be a good idea to rethink the hotkey config UI at some point. I like Simon's hotkey UI in Lix, and - to a lesser extent - the super simple UI I created for RetroLemmini.

Quote from: darkshoxx on June 29, 2026, 09:28:35 AM- It says "choose a folder" but it only lets me choose a replay file within that folder (but then correctly identifies the parent folder).

Yes, this is a problem. We should have a directory picker here.

Quote from: darkshoxx on June 29, 2026, 09:28:35 AMWould you like me to raise a github issue?

I was going to say 'no need' originally, but ... actually, this might be a good idea. Just make one for the folder issue for now, and please PM me your test replays.

Thanks for reporting.