Ok initial impressions... Looks friggin delish! Visuals are top notch, and im only even playing it on an ipad mini!
It has more of a Gene Effect feel rather than Waking Mars, but Unmechanical is more puzzle than exploration from what ive seen. It is a bit more linear, but the puzzles are well done, mostly because of the great physics backed up by eye popping visuals and high quality ambient sound effects.
I've only gone through the first area before the next loading screen, after youve dropped the glowing orb thingy to it's hole and you get to some sort of exit. AND EACH AREA IS HUGE.
And right now... I am totally impressed. Havent used the alternative joystick control schehe that i found on the options menu, but the default follow-the-touch control scheme works perfectly for me.
Physics, puzzling, graphics, sounds effects, and a bit of exploration are all top-notch and makes this a must-have for me.
I've only scratched the surface, but i can safely say, this is HIGHLY RECOMMENDED.