Stephen's Sausage Roll is my favorite puzzle game. But more interestingly -- it's a near-universal opinion within puzzle communities that SSR is one of the all-time best. I've never heard of such a strong consensus in other subgenres of game. Unlike other consensus "bests", it's relatively unknown to the public (which is understandable for many reasons). It's very likely that if you're a puzzle game devotee, you will…
I'll take Portal over it any day of the week
It's a fantastic game, one of the all-time greats, and there are tricky parts to execute, but it's not particularly challenging in terms of puzzling.