I have to say the game was a mixed experience for me. There will be a few mild spoilers, so don't read further if you haven't played it yet.
The good: nice looking visuals, good humour in the dialogues, fun puzzles. I am normally not fond of code puzzles, but there were enough hints here to solve it without reading anyone's mind. The F key showing hotspots was a lifesaver, and made the larger areas playable.
The bad: open world. I see what you want to do, but I prefer this freedom to move around in other genres, and not where I need to find certain hotspots or items at one certain location on the map. All the rest of the map is empty and unnecessary, and running back and forth is not fun. It also makes the premise of the puzzles sillier - if there are all those cars and houses, why can't the battery puzzle be solved in different ways?
Problems more specific to me: I found a bug once, when I fell through the ground and could see the houses/graphics from underneath. I couldn't reproduce it, and I saved frequently just in case.
The game is too dark (act 1) to be played in daylight. I needed a dark room for this.
I was stuck for a while looking for a way into the barn. Turned out the same dialogue option got a different answer and a key when I had got hold of an item. (Suggestion: give a new dialogue option.)
Now, there is much to appreciate here, but for me, the 3d/open world looked good, but didn't improve the game. I prefer to get the story, the jokes and the puzzles without too much searching. But don't misinterpret me, even though I make some critique, I am very impressed by your efforts. It's a good first game. I want your next one to be even better. ;-)