This game is a pretty solid demo for the writing team behind it and shows a fair amount of creativity. Well worth the playthrough. Although there are some setting details and inconsistencies (like having that big satellite on the moon which dwarfs the lander) its forgiveable.
The one major issue this game has is that the movement and physics both suck. Jumping feels gross and moving doesn't feel much better, especially over hills. For a walking simulator, not having good movement is kinda killer. I would not play an expanded version of this if movement was not improved.