You know since the Lunar Colonization was moved earlier we could move planetary colonization earlier too. Just as long as colonizing worlds beyond our solar system stays in the Galactic era. So like ... Blue = New Planetary Colonization Req Tech: Planetary Exploration AND Solar Propulsion AND Asteroid Mining AND Lunar Colonization Location: X100 Y3 Lunar Tourism Req Tech: Lunar Colonization Location: X101 Y1 Magnetic Sails Req Tech: Asteroid Mining AND Internal Shockwave Engine AND Lunar Tourism AND Solar Propulsion Location: X102 Y1 Planetary Extraction Req Tech: Planetary Colonization Location: X101 Y3 Planetary Manufacturing Req Tech: Planetary Extraction AND Lunar Manufacturing Location: X102 Y3 Planetary Trade Req Tech: Magnetic Sails AND Planetary Colonization AND Lunar Trade Location: X108 Y15 As you can see only a few requirments get changes and its mostly moving them to new locations. EDIT: I applied these and it seems to work fine. See the SVN for them in action. I also found some techs covering up other techs and fixed that while I was there.