This is version 2. Credit goes to bluedionysius (Mark Woodson) whose tech tree v2 was the basis of my tech trees. They are quite similar to his. Mine has a different layout and cleaner connections (less line crossing). Also many descriptions of techs were changed to be more new player friendly. I have included tech trees for all versions of the game. Slide 1 is the base game. Slide 2 is including SE. Slide three is including ST. Thank you to Adamukk for noticing that I missed Hyper Metabolism on Slide 3.