I know two versions of Lemmings under Dos:

There's one:
- Where the music of the first level reappears if you miss to any other level
- Where the code BILLANDTED works and the code VERSIONNUM doesn't
- Where the bar of skills is shown in black under windowed Dos mode

There's the other one:
- Where the music of each level is playing individually even if you miss
- Where the code BILLANDTED doesn't work and the code VERSIONNUM works
- Where the bar of skills is shown normally under windowed Dos mode

So, is there's a Lemmings version:
- Where the music works like the second version above
- Where both codes are working correctly
and
- Where the bar of skills is shown? (But for this one, it's less important because you can see it under Dosbox)

I've got one in which neither code works. :P

Edit: Also I think the code "versionnum" only works in the hacked (by VTM?) version of Lemmings.  In any case "versionnum" works in Customized Lemmings.

versionnum also works in the x-mas games.

Am I right?
VGALEMMI.EXE -> BILLANTED works, VERSIONNUM works not, music keeps
LEMMINGS.EXE -> BILLANTED works not, VERSIONNUM works, music is switching

Of course, this is the executable that changes all this. I don't know if there's a good executable file that allows the game to be perfect! Someone knows?

Like Mindless, neither code works in my version of Lemmings (but it's cracked...).

BILLANDTED also works in the CD version with the too-large safe fall height (the version of Lemmings/ONML I have).