Author Topic: How to play Lemmings 3D in DOSBox  (Read 600 times)

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Online namida

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How to play Lemmings 3D in DOSBox
« on: July 05, 2019, 08:51:27 pm »
There are two ways you can run Lemmings 3D - manually, or via the launcher in L3DUtils. I recommend using the launcher; the setup is slightly less complicated, and starting up L3D after the initial setup is a matter of launching L3DUtils then clicking a button - plus L3DUtils gives you some other nice features, like being able to save and share your level solution replays.



There are some common steps that must be done either way, plus some steps that are specific to one way or another.

Firstly, you must obtain and set up DOSBox. DOSBox is free software, in both senses of the term: https://www.dosbox.com/

Secondly, you must configure DOSBox. Open your DOSBox options and change core to "dynamic", and cycles to "max". Optionally, change the output display options if you wish.

Thirdly, you must acquire a copy of Lemmings 3D. You can acquire a legitimate copy via your preferred source. Otherwise, you can obtain a copy of the game:
- Non-CD Version: https://www.camanis.net/lemmings/3dlemmings.php
- CD Version: https://archive.org/details/lemmings-3D (requires torrent client)

Extract (or copy, in the case of a CD version) the files to somewhere on your hard drive.



Running Lemmings 3D via L3DUtils - Preparation (You only need to do these steps the first time you run the game)

1. Download L3DUtils and put it in the same folder as Lemmings 3D.

2. (Optional, but recommended) Launch L3DUtils, go to "Game Patches", and apply the Music Patch. (If you're using the above copies, you don't need the Pyramid Texture Patch - although you can apply it anyway if you want, it won't do any harm.)

3. Where L3DUtils asks for a path to DOSBox, click the "..." and locate your DOSBox EXE. This is usually in either "C:\Program Files\DosBox\" or "C:\Program Files (x86)\DosBox\".

4. If you have a real L3D disc, or an ISO image of one, select the "ISO" or "Drive" option respectively and, as applicable, find your ISO file or enter your optical drive letter. If you do not have one (eg. when using the non-CD version above, or most abandonware copies of the game), select "No Disc". *

5. Click the "Run Setup" button. This will open L3D's setup utility. Go to Setup Hardware -> Sound. Under "Select Music Card" select either "Soundblaster" or "General Midi" (or "None", if that's your preference), and under "Select Sound Card" select "Soundblaster" (or "None"). You can also turn CD Music on if you're using a CD version of the game. Make sure to exit out of the setup utility via its menus, rather than by X'ing DosBox. **

* If you want to use the CD version with no CD, or if you want to use a CD (for CD audio) with the non-CD version, L3DUtils has a patch to switch the EXE between the two versions.
** It is possible with some extra work, to get Gravis UltraSound working in DOSBox, but that's beyond the scope of this tutorial. I think that's the only other one that's supported. I know for sure AWE32 is not.


Now, with the above setup done, launching L3D is as simple as opening L3DUtils and clicking "Run L3D". L3DUtils will take care of mounting folders / etc for you, and can even swap between multiple save files.



Running Lemmings 3D in DosBox manually

Using L3DUtils is recommended, but if you don't want to use it (or can't, eg. due to using a Mac / Linux system), you can do it manually instead.

1. Mount a folder as C drive. This can be the Lemmings 3D folder, or a folder that contains it. For example, if you extracted / copied L3D to "C:\Games\Dosbox\L3D", you might want one of the following:
- MOUNT C C:\Games\Dosbox\
or
- MOUNT C C:\Games\Dosbox\L3D
Make sure you are mounting the same folder every time, because Lemmings 3D stores its save files in (what it believes to be) C:\LM3D.CD\, even when using a non-CD version of the game.

2. If you're using a CD version of Lemmings 3D, mount your optical drive or the ISO as D drive:
- MOUNT D D:\ -t cdrom (if using a physical disc, or a virtual drive via external software like Daemon Tools)
- IMGMOUNT D C:\Games\DosBox\L3D.CUE -t iso -fs iso (if using an ISO file)

3. Navigate to L3D's folder in DOSBox and type "SETUP" then hit enter. *

4. Configure L3D's sound options; see Step 5 of the L3DUtils method above, the same settings apply here too. *

5. Type "L3D" then hit enter, to start the game.

* You only need to do steps 3 and 4 the first time you run L3D, not every time.



Some useful information:

- You CAN skip the intro, except for the first time you run L3D - just hold the space bar, and next time L3D transitions between intro screens, it'll jump directly to the title screen instead.
- If you have a CD version, and L3D won't start up, try using L3DUtils's "CD / Floppy EXE Patch". This will turn it into the non-CD version which tends to give people less problems. The downside is that you lose the option of CD Audio - the setting is still there in the options menu / etc, but it won't work. (CD animations still work, as long as the files are present.)
« Last Edit: July 06, 2019, 04:12:30 am by namida »
My released level packs:
Lemmings Plus Series | Doomsday Lemmings

Offline chrisleec728

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Re: How to play Lemmings 3D in DOSBox
« Reply #1 on: August 26, 2019, 02:18:35 pm »
Is anybody else having trouble getting "Armageddon" (aka nuke) to work on here?

Offline Pooty

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Re: How to play Lemmings 3D in DOSBox
« Reply #2 on: August 26, 2019, 07:20:48 pm »
If the game is running too quickly, the nuke is very hard to fire off. There are two ways of getting around this:

  • Press Alt+Q together to trigger the nuke.
  • If you're thinking of using the nuke to restart or to finish a level, you can alternatively press Escape. If you haven't saved enough lemmings, the level will restart. If you have, you'll move on to the next level.
SEGA Master System version
100% on 110/120 levels (92%). Other levels [Lemmings lost]:
Fun 03 [3], 06 [2], 18 [5]   
Taxing 19 [5], 27 [1], 28 [3]
Tricky 15 [5], 17 [2]
Mayhem 19 [7], 26 [10]

Online namida

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Re: How to play Lemmings 3D in DOSBox
« Reply #3 on: August 26, 2019, 07:26:34 pm »
^ As a third way, if you want to quit completely (note that this goes straight to the title screen, and discards your current attempt even if it's successful), press F11. You'll be prompted to confirm this by pressing (or clicking) Y.
My released level packs:
Lemmings Plus Series | Doomsday Lemmings

Offline ccexplore

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Re: How to play Lemmings 3D in DOSBox
« Reply #4 on: August 26, 2019, 08:52:25 pm »
If the game is running too quickly, the nuke is very hard to fire off.

It was established on another thread that unless you're using an ancient PC (like, dating back from when the game was originally released), or running DOSBox in some unusual heavy debug mode that produces massive slowdowns, the game will almost certainly be "running too quickly" for you and will give you trouble with nuking.

Online namida

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Re: How to play Lemmings 3D in DOSBox
« Reply #5 on: August 26, 2019, 08:57:39 pm »
I had a PC that was very slightly older than the game itself, which nuking on via mouse was borderline impossible. I think you need even older than that. :P

But as Pooty mentions, the keyboard shortcut does not give difficulty. You do have to press both buttons at the same time (you can't hold Alt and then press Q), but the game is lenient enough that you're unlikely to have much trouble doing it.
My released level packs:
Lemmings Plus Series | Doomsday Lemmings

Offline Pooty

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Re: How to play Lemmings 3D in DOSBox
« Reply #6 on: August 26, 2019, 09:05:52 pm »
It was established on another thread that unless you're using an ancient PC (like, dating back from when the game was originally released), or running DOSBox in some unusual heavy debug mode that produces massive slowdowns, the game will almost certainly be "running too quickly" for you and will give you trouble with nuking.

Well, I run my DOSBox in a fixed 50000 cycles, and I am able to double-click the nuke in all but the sparsest levels (e.g. Dot to Dot). I've set it this way because I think the animated objects in the game cycle too quickly.
SEGA Master System version
100% on 110/120 levels (92%). Other levels [Lemmings lost]:
Fun 03 [3], 06 [2], 18 [5]   
Taxing 19 [5], 27 [1], 28 [3]
Tricky 15 [5], 17 [2]
Mayhem 19 [7], 26 [10]