Alpha One has a lot of really good game play once you get the idea of what you can do, but its all just a taste of what could have been much deeper. You hunt aliens and clear infestations off your ship by crawling around dark work shafts, Missions to mine on planets, Tower defense your ship from pirates. Unfortunately it's like a early access game that the devs needed to put a few more months into to finished the content to completion. It played stable and I found I wanted much more of the game when I hit a ending. Just like a really good demo. Worth a good sale but not anything near full price justified.