Based on Steam version. I have put around 40 hours into this game and I love it! You can do everything right for 30 in game years, screw up one small thing in year 31, and by year 35 everyone is dead. It can happen out of nowhere and you can do nothing but watch them die. You yell at their corpses for 5 minutes and load up a save point and see if you can stave off disaster based on your extensive time travelling experience. I recommend this game to anyone who loves RTS games.