Starbound is one of those games that I've been following since the very beginning, and I'm very happy with how it turned out. Many people write it off as simply "Terraria in space", but I feel that's a disservice to the many things this game does right. There's a ton of customization options for your avatars, from different races, poses, colors, clothing, etc., and the building is just fantastic. There's so many options for customizing and decorating your space, I've spent just as much time fleshing out my house as I have exploring and doing missions.
For this game, exploration is the main focus, compared to Terraria's combat. With tons of planets to discover, space stations to raid, and a fun story mode, you're always doing something in this game. The music is also really good in this game, very chill and fits the mood quite well.
There's also multiplayer, which is what I'm doing right now with some friends, and it honestly makes the experience that much better. It's not necessarily built for multiplayer, so some of the dungeons so far are pretty easy, but building together and all the shenanigans we get into just make for a great experience.
Overall, get this game if you're a fan of space exploration games where you can just chill out and explore the stars, maybe with a friend or two.