Played this for a couple of hours last night. I am still on my home planet, trying to unlock, catalog, and find everything I can on it before I move on. This game will take me a very long time.
I went to bed sort of bored of the game, but then this morning I woke up and all I wanted to do was play it more, discover more, explore more, progress more. I suspect it is a game I will keep returning to again and again. Like Binding Of Isaac, which I have hundreds of hours in and still haven't unlocked everything, but boy do I love playing it in spurts over a long period of time.
That to me is what games should be. Not epic one-time spurts and then done with the game, but games which you can return to again and again.