NMS scratched an exploration itch for me and periodically still does, when new content comes out. I play the game and go lookatthat! (seriously, read this book, it is great!). An explorer sees a massive mountain when he gets off the space ship and says, lookatthat! And so the mountain is called that for generations to come.
Until the shiny wears off and then I put it on my external drive for the next update.
It seems to be a modern trend, games that keep adding little bits instead of coming out fully formed at launch.
I do the same for a range of games I buy from Steam, most notably the early access games.