Portal Prelude Easter Eggs And Secrets

This week and the following week I'll be covering Valve steamworks official and semi official mods developed by third parties, for Portal and Half Life. Portal Prelude take place before events in Portal, so it's basically a prequel, that tells story about how GLADoS was created and came to power. But what's more important is the fact this mod doesn't lack Easter Eggs, so I decided to throw them all in one video! Music: Portal 2 OST The List: 1. Super Mario Bros Reference (Green Tubes Map Wrap) 2. Badge