I recently played through all of the games by Amantia Designs. (Machinarium, Samorost, Samorost 2) and I want more! So who can tell me some adventure games with clever style, great atmosphere and good art? I really haven't played hardly any other adventure games out there, other than watching someone play Grim Fandango and Monkey Island. These adventure games are quite hard to find, so I thought you guys would be the best people to ask.

Hanamushi: Flower insects is similar in design

You could try The Dig, its on steam pretty cheap and is a damned good adventure game with some really nice designs

Then play the remarkable Questionaut.

It's "Amanita". Like the mushroom.