I've made some progress with this already. We have all the music in .mod format (much smaller file size than .ogg or .mp3), and the levels are all converted to .rlv.

I'm working my way through them quickly just to check for things like screen start positions, empty space, and to make sure the standard solutions work (big thanks to ericderkovits and IchoTolot for posting solutions on YouTube for when I get stuck!)

As for ordering, level selection, backroute fixing and stuff like that, that can happen later. Once I have everything good to go I'll post a suggested "track listing" for the first 2 packs along with the pre-prepared levels and we can go from there.

Sounds great! It'd be interesting to hear what you come up with. All the best with it

Version 2.9.5 hotfix update

I really will try to make this the last update for a while. User records weren't being stored/displayed correctly - this has now been fixed (amongst other things). To everyone who has been keeping up with the version updates, many thanks for your patience and support.

Here's what's changed:

Player Records

• Bugfix - Completed was being set to "false" incorrectly in 2.9.4, this has now been fixed. If you downloaded 2.9.4 before I had a chance to catch this, and have used it to play levels, see these instructions for quickly restoring your progress.
• Bugfix - Records are once again shown correctly in the Level Select dialog. The refactor which fixes this also fixes a number of other de-sync bugs.
• Player records are now always automatically backed up when opening RL, not just when migrating between formats.

Replay Autosaving

• Replays are now automatically saved into a sub-folder with the same name as the level pack
• Improved default name string - titles are concatenated to allow for single underscores (rather than double) between tags, and timestamp values are separated by "-" rather than "_"

Hold LMB to Assign

• 'Ctrl' instead of 'Alt' is now used for this feature for stability purposes
• So, hold Ctrl and LMB to automatically assign skills to any lemming under the cursor!

Skill Panel

• Holding LMB and dragging the cursor across the panel now switches between buttons

DMA Levels

• Renamed SEGA Lemmings rating to 'SEGA' rather than 'Extra Levels'.

Music

• Updated default .mod tracks.
• Further improvements to missing music handling.

A reminder of what's new as of 2.9.

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Get the latest version here.

Hi kalo, welcome to the Forums. I'm sure we'll be able to help.

Please find attached the MIDI tracks that are available from the Windows 95 port. I'm not sure if this is what you want. Which version/port of lemmings are you playing?

I suggest we apply to this pack whatever changes we end up applying to the RL version as proposed here.

Mobius has made it clear he's happy for these packs to be re-arranged, and so we have an opportunity to (a) sync both NL and RL ports, and (b) create a trilogy, the third part of which (the proposed Lemmings Assemble) can be a new Forum collaboration pack. The first two parts would be the current Revenge of the Lemmings but sorted into 2 smaller packs with fewer levels, the second of which could be titled Return of the Lemmings (or something better if anyone has any suggestions?)

Let's continue any discussion regarding this in the linked topic. As it stands, Mobius' 2022 version of ROTL will remain as-is. Pending development of the proposed RL port, the 2022 version may receive a similar (or identical) update at a later stage.

Version 2.9.4 hotfix update

If you're one of the 2 people that downloaded 2.9.4, my apologies. Please do not use it as it won't store your progress correctly.

If you DID happen to use it, all is not lost. To quickly restore your progress, open the 'yourusername.ini' file found in settings/players/ in any text editor and change all instances of "completed=false" to "completed=true".

You can do this in Windows Notepad by pressing Ctrl+H, then adding the following fields:



Go ahead and click "Replace all", then save the file. This will restore any progress made in 2.9.4.

Quick thought: I see the sense in these packs being a Forum-wide thing, and being the same in NeoLemmix.

Development for the NeoLemmix version is already very far along, would anybody want to re-arrange the NL versions of the ROTL packs as suggested in this post (i.e. packs with 120 levels across 4 groups of 30)?

Maybe it's too early to be asking this. The thought has occurred to me though, particularly following Proxima's question regarding this.

Quote from: ericderkovits on March 28, 2026, 01:32:32 AMAs per Willem's request on discord.

i.e. Eric sent this message to me as a PM but I thought it made sense to make it part of the general discussion.

Quote from: ericderkovits on March 28, 2026, 01:32:32 AMRevenge of the lemmings rearranged was ordered like mobius's NL 3.0 version of the pack except for the extra2 and extra3 ranks ... the extra1 extra2 and extra3 rank levels can perhaps be put into the lemmings assemble one.

Exactly, this is the general idea. Any levels which aren't featured in the latest NL version could potentially form part of the new collab pack, particularly if they're levels by currently-active members.

Quote from: ericderkovits on March 28, 2026, 01:32:32 AMalso mobius had an outtakes pack with plenty of other unused levels with some good ones. Almost all of them use the OG styles ... perthaps you (Willem*) can choose the ones that are good.

Again, this is exactly the kind of thing we want: additional levels by currently-active members. @mobius, do you have these levels handy to post here to this topic (don't worry about format, we can convert if necessary)?

*We can decide as a group which levels should make the final cut, I think Eric is just making it clear here that his original message was addressed to me.

Quote from: ericderkovits on March 28, 2026, 01:32:32 AMWillem can do what he wants with The Lemmings Rearranged pack to divide it into the 3 new packs: Revenge of the lemmings, Return of the lemmings and Lemmings Assemble.

Glad to have your approval with this, particularly since you have been looking after the SuperLemmini version. I should make it clear that I respect the history of ROTL as a community pack and won't do anything without approval from other Forum members who feel invested in the project's development up to this point.

If you do feel invested and (like Proxima) want to have a say in this, NOW is the time! There's no need to rush anything, of course, but there's also no need to wait months or years to make progress with it.

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Next steps.

Perhaps the first thing to do is to draft the first two packs in the trilogy.

Pack I - Revenge of the Lemmings <--- this one
Pack II - Return of the Lemmings <--- and this one
Pack III - Lemmings Assemble

These should entirely comprise levels from the current SuperLemmini/NL versions of ROTL but split into 2 packs of 120 levels each. Others will likely have a better idea of general chronology of the levels than I do, and a better grasp of the pack's history, so input is needed here for sure. Ideally, the first pack would be the oldest levels, and the second pack the newest levels. Anything left over can be considered for inclusion in pack III.

We need an initial something to work from, so if nobody has posted anything by the end of next week (Friday 3rd April) I'll put together a frst draft (which will definitely need to be re-worked by someone with more knowledge of ROTL than me!)

In the meantime, I'll keep playing through the existing levels and try to solve as many as I possibly can!

Cool, thanks Cindy. Welcome to the Forums!

Quote from: Mobiethian on March 26, 2026, 09:50:15 PMI want to learn it is what I had in mind.

Please do go ahead, it'll be great to have your involvement!

Quote from: Proxima on March 26, 2026, 11:10:17 PMSo the first question is: are you offering to take over as pack maintainer for RotL in addition to putting together and maintaining the new pack? (There is, of course, no reason why these have to be the same person.)

I suppose so, but if others want to get involved and help out that would be much appreciated. I already have more than enough going on lemmings-wise as it is. I'm very happy for someone else to take on the role of maintainer, and will likely ask for someone to volunteer if nobody does; my assumption of that role for now is just to get the project up and moving.

Quote from: Proxima on March 26, 2026, 11:10:17 PMdo you intend to come up with the selection and ordering yourself or through community discussion?

Community discussion probably, with time limits so that the initial sorting part of the project doesn't go on forever and cause people to lose interest. So, if a decision hasn't been made by an agreed date or if consensus can't be reached, it's pack maintainer's call.

I'd probably want to do it as quickly and simply as possible, and make the first two instalments (ROTL I and ROTL II) essentially set-and-forget packs that we agree are complete and don't mess with further. I'd be relying on others' input with this for sure!

Quote from: Proxima on March 26, 2026, 11:10:17 PMShould new versions be made for RetroLemmini, SuperLemmini and NL so that it's playable in the new selection/ordering on all engines, or is that not important?

No, I don't think that's necessary; this can be seen as more or less its own project. It certainly won't be back-ported to SuperLemmini (not by me, anyway). Meanwhile, if NL users want the pack to be ported to NL, I personally see no reason not to, but it's not part of the initial plan and is a bridge to be crossed later (if at all).

Quote from: Proxima on March 26, 2026, 11:10:17 PMWhat will you do when level solutions are impacted by game mechanics differences between the engines?

Either fix or replace the level, I imagine. As yet, I don't think there have been any level-breaking changes between original Lemmini and RetroLemmini. Replay-breaking changes, sure, but the levels themselves all hold up (AFAIK).

Quote from: Proxima on March 26, 2026, 11:10:17 PMIt sounds like you want to move it back to (now Retro)Lemmini primarily; is that the case? If so, can you explain why you believe that should be done?

Mainly because RetroLemmini is an experience closer to playing the original game than any of the other engines, and it seems like a more appropriate platform for OG-style levels. But also, because it would simply be good to have more custom content for RetroLemmini. I've worked hard on updating the engine, making it more user-friendly, and adapting the NL Editor for use with it, so a collab pack with community involvement would be the icing on the cake at this point.

Quote from: Proxima on March 26, 2026, 11:10:17 PMI am still happy to help with producing the next version in any way I can.

Awesome! The more voices and involvement we have, the better

Quote from: kaywhyn on March 26, 2026, 08:11:09 PMSpeaking of RotL, I'm currently sorting out and tidying up eric's SuperLemmini conversion of the pack.

Ah OK, cool. Well, I've been thinking that maybe the RetroLemmini version of ROTL could be split into 3 packs. There are currently 270 levels across 10 ratings, which just seems excessive tbh. We could easily split this into 2 packs of 120 each (ROTL I and II, each with 4 ratings of 30 levels), and then have 30 levels left over to start Lemmings Assemble (which would essentially then be "ROTL III"). We'd then ave a ROTL trilogy, which seems a much better way to maintain these packs going forward.

If your intention is to maintain the SuperLemmini version only, then of course you don't need to do anything regarding the proposed RetroLemmini version. But, it might be good to have your involvement with this as well.

Quote from: hrb264 on March 25, 2026, 07:13:02 PMI'd love to get involved:)

Awesome! Well, feel free to keep creating levels and we'll definitely include some for sure.

Quote from: Mobiethian on March 26, 2026, 03:07:55 PMI would like to make some levels for this, too! Would be fun. I'm getting better at making more difficult levels. Count me in!

Quote from: kaywhyn on March 26, 2026, 08:11:09 PMFor RetroLemmini, not NL

The more the merrier!

This goes for everyone: if you mainly create for NL but want to get involved with this project, that's fine. The SLX Editor can easily convert your levels to .rlv format for use in RetroLemmini, so you don't have to do anything differently than normal. Just create some levels in whatever Editor is best for you and we'll take it from there.

I had an idea today whilst playing through Revenge of the Lemmings and just wanted to make a note of it here.

A new community collaboration pack called Lemmings Assemble. That's as far as I've got with it. I'll add more later pending discusson with Eric on Discord.

Here is a GUI-based tool for building a full levelpack.ini file. You can add music, levels and groups and auto-generate a codeseed for the pack.

For RetroLemmini: Make sure the .exe is placed in the RetroLemmini root directory, or 'resources' folder.

For any other version of Lemmini: Make sure the .exe is placed in the same folder as 'levels', 'mods', 'music', etc.

Enjoy!

Changelog:

Version 1.1 ensures that the resources\ folder is present
Version 1.2 adds .rlv support
Version 1.3 removes the junk strings between level entries (your level files should be properly named anyway! )
Version 1.4 fixes the music indexing issue
Version 1.5 adds the ability to load and edit a pre-existing levelpack.ini file
Version 1.6 adds 'mods' to the .ini correctly, and shows a confirmation dialog after saving
Version 1.7 adds the ability to choose between three music playlist modes (restart playlist at the start of each group of levels, wrap continuously in order (default), or randomize)

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F.Y.I. It's always possible to download the latest version of the LemminiLevelPackCompiler via the Editor.

To get the ball rolling, here's a few solutions I found recently that are new (to me, at least!) ways of solving these levels.

L1 Mayhem 25 Have a Nice Day 100% saved using a different route than usual.
ONML Crazy 19 Don't Panic using compression method throughout.

This topic is for sharing replays for the DMA levels included with RetroLemmini:

Lemmings
Oh No! More Lemmings
Holiday Lemmings
Lemmings Extra
Genesis (MegaDrive) Lemmings
SEGA Lemmings
PSP Lemmings
NES Lemmings
ZX Spectrum Lemmings

Feel free to share any replay you like for any of these levels. Whether it's an interesting new solution, a 100% saved achievement, or a cheeky backroute!