Really interesting game! I struggled a bit initially to figure out the correct method to play, but I actually think that's an asset to the game. I may not have played so long (about 4 hours) if I didn't have that drive to figure it out. I would love some more research or a larger map.
I love the game's visual design. Its very light and everything fits well together.
I would have appreciated a pause. If anything interrupted me I usually died within a couple minutes of being away from the computer.