7. PORTAL

Portal is the puzzle game that made everyone say “why aren’t more games like this?” You’re given a gun that creates two connected portals, and from there, everything spirals into elegant, mind-bending puzzle design. But what really makes Portal unforgettable is GLaDOS — the passive-aggressive AI who guides you with cake promises and threats.

The puzzles are brilliant, the pacing is tight, and the humor is razor-sharp. It’s short, but that’s part of its charm — no filler, just smart design and storytelling. Whether you’re into physics or just want to laugh while problem-solving, Portal is a 10/10 classic.