KIWI TALKZ interviews various employees (or ex-employees) from Valve and Retro Studios. He was the one who conducted the famous interview with Valve writer Eric Wolpaw, who had expressed his interest in writing Portal 3. Well, there’s also the interview with Portal 2 lead designer Josh Weier. There was one interesting clip where he talks about how Super Metroid influenced the introduction to Portal 2: We had this problem in the game which was if you just played Portal, we didn’t want to make you learn portals all again.