This game just went Beta a few days ago. I have been playing for about a year and it can get addictive and time consuming if you are not careful. It is well worth the $30 IMO. There is a whole Reddit community for the game that has many posts per day of user's successes and many failed attempts (www.reddit.com/r/kerbalspaceprogram). The developers of the game also frequent the subreddit and are very active in the community taking suggestions, bug reports, etc.