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Lemmings FunLevel20.png
Water and trap omitted from level preview

Difficulty Fun
Level # 20
No. of Lemmings 50
To be Saved 60%
Release Rate 10
Time 5 Minutes
Level Chronology
Previous Take good care of my Lemmings
Catch more floaters. (Genesis)
Next You Live and Lem
Lemmings in the attic (Genesis)

We are now at LEMCON ONE is the twentieth level in the Fun difficulty in Lemmings.


The first Lemmings builds over the acid while Blockers are placed on both sides of the entrance (keep the Blockers away from the Builder's ramp). Have the Trailblazer bash through the many poles until he reaches the pit just before the exit, where you need to build. Bomb the right Blocker to release the Lemmings.

100% strategy[]

If you want to save 100%, have multiple Lemmings build over the gap to the right of the entrance. Once across, instead of blocking, you can build on the marble stairs so that the lemmings are contained. Next, use a Climber to get over the poles and build over the gap next to the exit. When the path is clear, bash through the poles.


A backroute can be done in this level. It is just barely possible to build up to the ceiling. The level is then solved by bashing a long tunnel through the ceiling, and digging precisely above the exit so that lemmings don't splat.

Version differences[]

Atari Lynx
  • Was renamed "Lemcon One".
  • Only has 40 Lemmings and 25 must be saved.
2006 Remake
  • 7 minute time limit.

Access codes[]

  • Acorn Archimedes / Atari Lynx: SECONDSCOR (second score)
  • DOS:
  • Macintosh: HLFLCMNEDW
  • PC:
  • Sega Genesis: CBKBP


  • This level is replaced with Sega One in the Sega Master System/Game Gear versions.
  • This map is also used in level 7 of the Mayhem difficulty, Poles Apart.
  • This level's title is a pun on the DEFCON system, where level 1 is the most severe.

Lemmings Levels
Fun Just dig!Only floaters can survive thisTailor-made for blockersNow use miners and climbers
You need bashers this timeA task for blockers and bombersBuilders will help you hereNot as complicated as it looks
As long as you try your bestSmile if you love LemmingsKeep your hair on Mr. LemmingPatienceWe all fall down
Origins and LemmingsDon't let your eyes deceive youDon't do anything too hastyEasy when you know how
Let's block and blow!Take good care of my LemmingsWe are now at LEMCON ONEYou Live and Lem
A Beast of a levelI've lost that Lemming feelingKonbanwa Lemming SanLemmings Lemmings everywhere
Nightmare on Lem StreetLet's be careful out thereIf only they could flyworra lorra LemmingsLock up your Lemmings
Tricky This should be a doddle!We all fall downA ladder would be handyHere's one I prepared earlier
Careless clicking costs livesLemmingologyBeen there, seen it, done itLemming sanctuary in sight
They just keep on comingThere's a lot of them aboutLemmings in the atticBitter LemmingLemming Drops
MENACING !!Ozone friendly LemmingsLuvly JublyDiet LemmingaidIt's Lemmingentry Watson
Postcard from LemminglandOne-way digging to freedomAll the 6'sTurn around young lemmings!
From The Boundary LineTightrope CityCascadeI have a cunning planThe Island of the Wicker people
Lost something?Rainbow IslandThe Crankshaft
Taxing If at first you don't succeed..Watch out, there's traps aboutHeaven can wait (we hope!!!!)Lend a helping hand....
The Prison!Compression Method 1Every Lemming for himself!!!The Art GalleryPerseverance
Izzie Wizzie lemmings get busyThe ascending pillar scenarioLivin' On The EdgeUpsidedown WorldHunt the Nessy....
What an AWESOME levelMary Poppins' landX marks the spotTribute to M.C.EscherBomboozalWalk the web rope
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
Mayhem Steel WorksThe Boiler RoomIt's hero time!The CrossroadsDown, along, up. In that orderOne way or another
Poles ApartLast one out is a rotten egg!Curse of the PharaohsPillars of HerculesWe all fall downThe Far Side
The Great Lemming CaperPea SoupThe Fast Food Kitchen...Just a Minute...Stepping Stones
And then there were four....Time to get up!No added colours or LemmingsWith a twist of lemming please
A BeastII of a levelGoing up...All or NothingHave a nice day!The Steel Mines of KesselJust a Minute (Part Two)
Mind the step.....Save MeRendezvous at the Mountain