01:53:45

Playing your Custom Maps for Portal: Revolution

03:01:07

Q&A with Portal Stories: Mel Lead Developer Anna

03:18:47

Act 4 - Developers play Portal: Revolution

01:05:21

Reviewing Fan Art Contest Submissions! - Portal: Revolution

03:46:40

Act 3 - Developers play Portal: Revolution

03:18:17

Developers play Portal: Revolution - Act 2

03:51:19

Developers play Portal: Revolution - Act 1

03:02:55

1 MILLION TRAILER VIEWS! (Celebration Q&A)

02:56:23

Portal: Revolution Q&A! 100K Trailer Views!

02:26:41

Making a video asset for Portal: Revolution in Blender

01:59:55

Overgrown at night - Live Mapping

02:33:53

Portal: Revolution | Developer Q&A Stream #2!

04:13:21

Decorating an overgrown chamber

05:05:42

Portal: Revolution | Overgrown Live Map Decorating

02:30:38

Portal: Revolution | Live Mapping / Decorating

02:54:17

Portal: Revolution | Developer Q&A Stream #1!

54:15

The game I made in 2 days - Developer commentary

01:16:50

Mapping with Portal 2: Community Edition - feat. Volumetric lights :)

02:13:11

Portal 2 Maps Feedback for TWP Picture Perfect Competition Entries

01:38:30

Portal 2: Community Edition Mapping. Leak free!

01:43:59

Portal 2 Live mapping - Adding more detail and polishing it up

03:03:42

Portal 2 Live mapping - Finishing gameplay and adding first details

03:28:03

Portal 2 Live mapping - Making an overgrown map

01:32:54

Portal 2 - Continuing with Thinking with Portals 5th Mapping Competition maps

01:08:25

Portal 2 - Playing Thinking with Portals 5th Mapping Competition maps

01:42:33

Playing Stract's Portal 2 maps

01:37:09

Enhancing DL89's Portal 2 map!

01:38:27

Trying out Source 2 Hammer

02:53:00

[ENG/GER] Judging Thinking with Portals Competition Entires!

02:10:40

Looking at Thinking With Portals Competition submissions