After recently playing Portal for the first time, it's time for me to give a retrospective on Valve's Portal video game series and why they're everyone's favorite 3D Puzzle games (SPOILER WARNING). Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for fair use for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use. Music Used: E's Jammy Jams - Book Bag A Night Alone Kevin MacLeod - Lightless Dawn Subscribe ► https://www.youtube.com/channel/UCFgD6UzjgLHTHg8YiEz7z2Q