Professor Heinz Wolff's Gravity USA

How strange, my grandfather's name was Hanns Heinz Wolff. And he had a PhD in Engineering and Physics!

good game a bit challenging

it's not that difficult actually, you just need to think out of the box. And sometimes when it looks like it didn't work, just press A again, the blocks may change a bit, and then it will work.

Is it hard ,easy or mediom dificulty

Yeah, i played this game...a whiiile ago? europe version, i enjoyed it a bit, but i am sure that you will have more fun the the homebrew application physicsds or sumthing.

It is kinda' rube goldberg esque - however, this one is different in that the pieces don't 'snap' into place when you place them on the field of play. The physics of the game are a bit sensitive (i.e., if you place an object down at an angle it will fall over) and there are multiple solutions to a single puzzle. Looking back at this game, it is more 'real' than the others mentioned which kinda' makes it more fun for me. I would still recommend this game to anyone fond of the genere.

So it's a bunch of "Rube Goldberg"-usque types of puzzles?

Both Crazy Machines and Mechanic Master are better than this. If you've played them to death then consider this one but if you haven't tried either of those two before, get them first. This one is clunky, and not very well thought out.

"Professor Heinz Wolffs Gravity is a challenging puzzle game for players of all ages. 100 exciting levels are waiting for you, all of them involving physics puzzles that you can solve with the skilful placement of building blocks and other elements"