Valve has released a number of videos over the years in order to promote the Portal games, and in order to demonstrate gameplay mechanics. Some videos were designed to showcase "Testing Elements", while others focused upon key characters or were produced specifically for journalists and critics and were displayed at large conventions such as E3. The following is a list of all official Portal-related videos that have been released by Valve.
Portal Videos
Main article: Portal
Promotional
Other
Portal 2 Videos
Main article: Portal 2
Aperture Investment Opportunity
Promotional
Testing Elements
- Excursion Funnel
- Aerial Faith Plate
- Aerial Faith Plate #2
- Thermal Discouragement Beam
- Pneumatic Diversity Vent
- Propulsion Gel
- Repulsion Gel
- Repulsion Gel #2
Other