Quite... Lackluster. It may have some good bones, but even that I'm unsure of, and really the biggest grievance is charging FIFTY DOLLARS for what feels like an early alpha. I've been around since the 0.17/0.18 days of KSP 1 and I am more than desperate to see this game succeed, but it's simply not worth it right now, especially with the hardware requirements. I'm not condemning it yet, but it's going to need some serious time before I really bother with it. Don't spoil KSP by making this your (re)entry into the games, just get the original, screw around, and then dive into the mods. I've spent thousands of hours of genuine fun and learning, and I hope you do too!