Portal | Underground Story
created by Marty and Toby.

This Portal story is based on the MTN Portal Story | Part One!
This mappack includes around 75 levels.
in this mappack have Project One, Project twO and a Training room for Project twO
the Project One isent that good as Project twO beoucse the Project One was my second map i creat.
I learned alot of mapping when i make the One. so the twO is much better.


# Based on MTN Portal Story | Part One.
# Around 75 test chambers.
# Level design similar to the original Portal style.
# Level difficulty is balanced, like the original.
# New gameplay elements, e.g. super jumps and red laser.
# Easter eggs and secret chambers.
# Several paths and two possible endings.
# Awesome storyline.
# Epic moments/endings.

Don't forgett to read the "Read me!"

Have fun!


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Portal | Underground Story

Portal | Underground Story

Jan 5, 2009 Full Version 16 comments

Here you can download Portal | Underground Story To install, follow the Install steps.

Post comment Comments  (20 - 29 of 29)
Colossal Jan 6 2009 says:

Are these the maps that you add in? Or is this a whole mod of the maps? Because I don't want to download it to put in maps I already have.

+2 votes     reply to comment
Skinnycap Creator
Skinnycap Jan 7 2009 replied:

This is the same maps.
i just wanted to upload it here so peoplw who don't have this can download it^^
This is one of the funniest maps ever :)

+1 vote   reply to comment
Colossal Jan 7 2009 replied:

I really did like these maps. But I don't get what happened in the one ending with the spheres. Message me so it doesn't ruin it for anybody. Also, have you thought about a third part? I would love for this to keep going.

+1 vote     reply to comment
fliros Jan 20 2009 replied:

ooww than everything explode (because the spheres were boms)
and than you are dead ( I didn't get it the first time too)

ooww and martin and maybe you brother do your best with "aperture déjà vu"

+1 vote     reply to comment
Nickel_Dare Jan 21 2009 replied:

Martin ( Skinny ) is working this time With Touppie together

+2 votes     reply to comment
fliros Jan 22 2009 replied:

didn't they do that always??

+3 votes     reply to comment
Nickel_Dare Jan 24 2009 replied:

By Portal|Underground Story wokred he together with his Brother ( Just in EP 2 )
He made the First Episode alone.

+2 votes     reply to comment
Nickel_Dare Jan 6 2009 says:

Skinny xD hey your Lvls ROCKS !!

+1 vote     reply to comment
piper647 Jan 5 2009 says:

75 levels!!! OMG

+2 votes     reply to comment
powell Jan 5 2009 says:

This is tight, Martin, you need to finish your newest Portal map now!

+2 votes     reply to comment
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Release Date
Released Aug 2008
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Puzzle Compilation
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7 months ago
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