I like the setting of "how do you spend the time when your world is going down in x years", reminded me of the Three Body Problem series. The visual presentation is great, too. The narrative feels more like a plot structure, which could evolve into a fairly fat book :) I played 2x, the ability to shift perspective from the one going on the journey to the one left behind is nice.
There were some error messages later in the game, but fortunately, the story still continued.