Portal 2
2011 · Puzzle / First-Person · PC / Steam
Portal 2 is Valve at the peak of its creative powers, delivering a puzzle game that's also one of the funniest and best-written games ever made. The single-player campaign is a masterclass in pacing and puzzle design, the co-op campaign is one of the best cooperative experiences in gaming, and the Steam Workshop ensures you'll never run out of new chambers to solve. Puzzles occasionally prioritize spectacle over challenge, and the comedy won't land for everyone, but those are minor complaints against a game that does nearly everything right. Over a decade later, nothing has replaced it.