Portal 2 turned 10 years old this week, giving us the perfect excuse to return to its timeless (and arguable unsurpassed) puzzle-platforming gameplay. But for those who know the game’s levels like the ...

Dom O'Leary is a contirbutor on Game Rant. He has over 6 years of experience in writing, covering everything from games news and reviews to commercial writing and editing. He's been a lover of games ...