The game is in Alpha, meaning it is not released. But it is playable just expect some hiccups, really it is no worse than many released games.
I have taken to this game like moth to flames. Everything I like, Space√, Sandbox√, Building√, Good Friends√, things blowing up√ and immersive√. Many will not like the games simplicity and box style (like Minecraft) but for me is just Lego for grownups. I hope to put together my first YouTube videos using this game so stay tuned and hopeful the evil Procrastinator will not strike again. but I suggest check it out for you, your kids, your mates.