A few changes have been made based on DragonsLover's bug reports.  Building through stairs now works correctly.  You can now build slightly into walls (without getting stuck!).  Climbing/walking over rough terrain now works better (selecting Lemmings on rough terrain was previously temperamental).

I tried out Lemmix - does this work in the same way as the Amiga version?  As pointed out, it seems to have some differences to the 'Lemmings for Windows' version I've got.

DragonsLover - I've made some changes which make 'A Ladder Would Be Handy' work correctly.  Let me know if you think it's OK now.  The 'p' key pauses the game for me in Firefox and Chrome.  Earlier I did find that the left/right arrows didn't work though, but later they did, so maybe there's an intermittent problem with key detection?  I'll try and replicate it and fix if necessary.

Out of interest, what devices other than a PC has anyone got this working on?  I've played it on the Wii and it runs quite well (although with no sound).  Would be good to know if it works on iPad/iPhone or similar devices.

Thanks Clam Spammer!

You can now no longer assign anything to falling lemmings (as per the Windows version of the game).

Re directional select, when you press the left or right arrow keys whilst hovering over a group of lemmings, does an arrow appear above the target/crosshair?

I've just made it so if you double-click the nuke icon when it's already selected it will end the game straight away, although I think I'll make it so that triple-clicking will have the same effect.

I'm looking into the 'hole making' function - it amends the actual level map in the correct way, it just occasionally displays it inaccurately!

Thanks DragonsLover.  Your suggestions will take a bit longer to implement than Ron_Stard's, but I'll try my best!

1. That's a common problem with animated GIFs, but pressing ESC should only freeze the animations if they haven't fully downloaded yet.   I was thinking of changing the way the animations are done as animated GIFs don't work on all platforms.  I'll keep you posted!
2. Well, I have got the Windows SFX, but I wanted to keep the number of copyrighted elements to a minimum so I created my own!  I've got permission from Tim Wright to use the music, but he didn't do the SFX unfortunately.
3. Like in the original game, you can make sure you're selecting a right-facing Lemming by holding down the right arrow key whilst hovering over the Lemmings.
4. Yes, the digger animation was a bit weird!  It's fixed now.
5. I tried to get the release rate matched to that of the real game - is there a specific level where you noticed this?
6. The 'last 3 blocks' sound effect seems to be exactly on cue on my computer - what browser are you using?
7. I'll look into the builder problem - probably just over-zealous collision detection!
8. There is now a short sound to confirm you have clicked on a Lemming.
9. Again, collision detection!  I'll look into it.
10. What level did you manage to do this on, so I can try and replicate it?
11. You can now change release rate when the game is paused!

I've created a new online Lemmings game.  I was originally just going to post the original DHTML Lemmings on my website, but upon playing it and reading through the code I noticed there was an extremely large amount of bugs in it, and it went really slowly on my 8 year old computer, so I rewrote it.

I've added HTML5 audio, improved the speed and made the timer more accurate, added a leaderboard (must be logged in via Facebook to add your scores currently), fixed loads of bugs which made some levels impossible to complete, removed the need for level codes (it remembers what levels you've unlocked) and lots more which I can't think of at the moment!

It also features Tim Wright's original Amiga music, which I have his permission to use!

Please feel free to try it out at http://bombsite.org/jslems/ and let me know if any levels don't work as they should, or if there are any improvements you'd like to see.