Chrono Horizon

You are a pilot from the planetary defense league on earth. Recently the leagues scientists have discovered a way to go back in time, allowing members to relive events while attempting to obtain a better outcome from it. This however comes at a cost as you are splitting time into two different timelines and abandoning your previous timeline to die. Recently, a swarm of aliens have descended onto earth, trying to take the planet for themselves. Defend earth from the alien onslaught and go back in...