This is an exploration, puzzle, mystery game that takes place in space. You play as a species named hearthians and your species recently discovered how to go to space. The game starts at the day where the character we're controlling is to go to space for the first time.
The game was being developed at least a decade past before it's release and i feel like this is very important on why this game is so perfect. Everything you see was refined for over a decade to come to it's finished form where it's more or less perfected for you. It takes some time before you're interested in it's mysteries, about one or two hours, but after you're wondering what happens and why, you'll be playing it until the end to discover everything you've wondered and the game does give an answer to every question you might have.
When i reached the end after finishing the DLC, the only thing on my mind was that this game is the best game i've played. Even better, best thing i've experienced. This is the highest 10/10 i can give, above everything else. A must play. Give it a chance.