Simple Yet Depressing
At first I thought this was just going to purely be a menu-driven experience, where you'd just click what action to do (basically like the later choice of park or work), but it certainly wasn't. There's just something about simply moving John left and right that makes it immersive. The primitive graphic design demands simple controls and it's exactly what it got. The slow transition between days and the constant reminder of what's to come makes you unsure if the decision you just made was the right one.
The only problems I came across were the lack of options and freedom. I think there should have been small yet meaningful options like hugging Molly before going work, or on the last day on Earth helping someone with their broken down car. I guess towards the last days, you could even decide what colour shirt to wear.
Another big problem was the actual ending. In my playthrough, John went to work, sat down, closed his eyes...and that was it. The music looped but nothing else happened. I was expecting this just to be a tense moment of rest before the red cross on the thing turned to a green tick, but nothing. I spammed the left and right arrows, space bar and clicked on everything. I guess he died, but sitting the way John did, I'm unsure.