Lemmings Wiki
Lemmings FunLevel12.png
Release rateRelease rate
Other versions
Sega Master System/Sega Game Gear

Difficulty Tricky
Level # 23
No. of Lemmings 100
To be Saved 60%
Release Rate 99
Time 5 Minutes
Level Chronology
Previous Turn around young lemmings!
It's Lemmingentry Watson (ZX Spectrum)
Next Tightrope City
The Crankshaft (ZX Spectrum)

From The Boundary Line is the twenty-third level of the Tricky difficulty in Lemmings.


As soon as your first Lemming touches the wide yellow brick wall at the right, utilize a Basher! You have no Blockers this time, so plenty of Lemmings will fall into the bottomless pit to the left, but you can't really do anything to prevent this. Once the wall has been broken through, send a Climber to get out of the pit towards the exit. Do not let him enter; instead, apply a Digger skill, then quickly a Builder skill to make him turn back to the left. When he does just that, give him the Miner skill so he can build a tunnel to the other Lemmings stuck in the pit. If your reactions were quick enough, your save percentage should be high enough that even with said casualties, you shall pass this level.

Atari Lynx strategy[]

In the Atari Lynx version, it's possible to rescue 100%. Make the first Lemming bash through the stairs. Bash through the yellow wall. Lemmings that are behind the Basher come back and get through that tunnel. Once through, make one Lemming a Climber. When he's almost at the exit, make him a Digger. Let him dig four to seven times and then make him a Builder to make him turn back from the exit. When he does just that, give him the Miner skill so he can build a tunnel to the other 39 Lemmings. If your reactions were quick enough, you'd save 100% of 40 Lemmings.

Sega Master System and Game Gear Strategy[]

Because the Original Release Rate is at 50, it's possible to rescue 100%. Make the first Lemming bash at the wall and then dig deep enough to hold the other lemmings. Make the second lemming mine close to the digger to slow him down. Make the digger bash one more time, this time, through the wall. Then it's okay to max out the rate. Let one lemming to build up to the gold floor's edge. You'd save 100%.

ZX Spectrum strategy[]

Have the first lemming bash through the wall. One or two lemmings will turn around due to hitting the end of the Basher's unfinished tunnel; these cannot be saved. Once the Basher has finished, have it build over the pit to reach the exit. Any lemming that falls in the put must be turned into Climbers while they're heading right. Raise the release rate to 99.

Version differences[]

Atari Lynx
  • Renamed "Boundary Line".
  • Only has 40 Lemmings and 24 must be saved.
Macintosh ad PC
  • Only has 80 Lemmings.
Sega Master System
  • Only has 20 Lemmings and 12 must be saved
  • Release rate is 50
Sega Game Gear
  • Renamed "THE BOUNDARY LINE".
  • Only has 20 Lemmings and you need 12 saved.
  • Release rate is 50.
ZX Spectrum
  • Only has 20 lemmings and 18 must be saved.
  • Release rate reduced to 50.
  • Time limit reduced to 3 minutes.
  • Available Climber, Floater and Basher skills reduced to 8, 8 and 1 respectively.
2006 Remake
  • 7 minute time limit.

Access codes[]

  • Acorn Archimedes/Atari Lynx: ONEISFORME (For "one is for me")
  • DOS:
  • Macintosh: NNICGKOFFO
  • PC:
  • Sega Genesis: MLDNS
  • Sega Master:
  • ZX Spectrum: HBENLOFPDL


  • This map is also used in level 12 of the Fun difficulty, Patience.
  • This level is a true roadblock of Lemmings and caught a lot of novice players off guard. It got so infamous that the solution was actually printed in the instruction manual of the Super NES and Sega Genesis/Mega drive versions.
  • This map is the 31st level on the Spectrum version of Lemmings and the 1st level of the Taxing difficulty.

Lemmings Levels
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From The Boundary LineTightrope CityCascadeI have a cunning planThe Island of the Wicker people
Lost something?Rainbow IslandThe Crankshaft
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Izzie Wizzie lemmings get busyThe ascending pillar scenarioLivin' On The EdgeUpsidedown WorldHunt the Nessy....
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Feel the heat!Come on over to my placeKing of the castleTake a running jump.....Follow the leader...Triple Trouble
Call in the bomb squadPOOR WEE CREATURES!How do I dig up the way?We all fall down
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