Memorable game but the puzzles' solutions will often make you say "Oh come on!"
Machinarium, despite being quite short, packs a lot. The artwork it displays is fabulous: each screen could be hanged in a museum. It's games like these that show us that 2D graphics can still rule. Add to this an interesting soundtrack and an odd beginning and you get an immersive and mysterious atmosphere much like "Braid". You will constantly ask yourself: "What happened in the city of Machinarium?" Unfortunately, the ending falls a bit short of expectations and certainly doesn't match Braid's.
As for the puzzles, I'd like to say that I consider myself something of a graduate from the Myst School of Point-and-Click. If you have no idea what that means, it's a poor way of saying that I have seen (and solved) some tough puzzles (Myst), some really hard puzzles (Riven) and some ridiculously mind-warping puzzles (Revelation).
And yet, I have rated this game as "hard". Is it because Machinarium belongs in the pantheon of Myst? Absolutely not (and that's not necessarily a bad thing). Machinarium's puzzles aren't complex. In fact, they're quite simple. The problem is, the solution often ends up being that you were missing some item. Or more generally, that you haven't clicked at the right place. And that's frustrating. I'm not sure who enjoys clicking the hell out of a screen for 5 minutes, trying to touch every pixel only to realize that you were supposed to click at the rim of the stove and not the center. I certainly don't.
Luckily, this kind of dead end is fairly infrequent and should not spoil the overall experience too much. However, it does act as a flaw in an otherwise perfect gem.