I started playing Machinarium last night

I started playing Machinarium last night and I had to stop and catch myself. I almost played for two hours and I didn't even realize it. The puzzles are really cute, just like the characters. You really have to think outside of the box to get each set done. There is a little light bulb at the top that will give you one visual clue. Or you can play a little mini-arcade game to get a play-by-play, visual walk-through. Pretty creative actually. You have to pay attention to almost everything in each screen. Even then...sometimes you have to go back five screens and pick up something you didn't even notice the first time through.

You should try it. It's basically just a big Flash game, so it was easy for them to put a demo up. You can play the game demo.

If you buy the game, here's an early hint: 5:45.