Portal 2

Portal 2

27,684 ratings
Penrose 01: Introductory Science
File Size
13.350 MB
May 13, 2012 @ 11:48am
1 Change Note ( view )

Subscribe to download
Penrose 01: Introductory Science

In 2 collections by Stratos
3 items
Fear the Reaper - The complete collection
8 items
Testing focus: Surface Division Fields
Difficulty: Easy
Expected play time: Not that long
Version: 1.2

20.000+ Total Unique Subscribers on the map! Thank you to everyone who played it! :D

This first map is extremely easy, it's really just an introduction to my way of using world portals. They go both ways and focus on logic, not confusion.

I hope you'll have fun with the puzzle and appreciate the artstyle and design.

Check out the Penrose Collection for the other maps in this test course. I have released Penrose 02 and 03 already, so you should definitely check those out!

The original thread for the map on ThinkingWithPortals can be found here:


Version 1.2
- Updated screenshots since V1.0.
- Made the map compatible with the workshop.
- Made custom indicator lines and checkboxes.

For past changes, see the map's original thread on ThinkingWithPortals.
Popular Discussions View All (1)
Apr 5 @ 4:09am
I experienced a bug in this Map
< >
c4shurik Jun 15 @ 5:06am 
to short!
EdMeister Apr 1 @ 8:57am 
That has to be the shortest test I've ever played!
Macleod Mar 16 @ 11:46am 
999/1000 stars
NUK3D Dec 18, 2017 @ 5:08pm 
I like the whole Aperture Southern District. People should make more maps with it.
sass Jun 28, 2017 @ 9:10am 
I think you just blew up my fucking mind.
Mesos Apr 26, 2017 @ 4:59pm 
Penrose 04: Beam Disjuction is now available for download!
Mesos Apr 25, 2017 @ 6:29pm 
Nevermind, I got the files myself. Also, in case anyone is wondering, I'll be uploading Penrose 04: Beam Disjunction soon!
Mesos Apr 5, 2017 @ 6:36pm 
Stratos if you see this, I would like you to know that I'm interested in your map idea and would like to make my own penrose maps. I would love to have some of the assets you used in your maps if you are willing.
Petutski Mar 27, 2017 @ 4:25am 
Good map. Understand the rules.
Koitenshin Mar 4, 2017 @ 10:29am 
This is an incredibly awesome mechanic.