Global - Complete Eras (GK)
Compatibility: G&K required, Hot Seat
Every tech in an era must be researched before any tech from the next era.
The display of the Tech Tree is unaltered (ie all the new dependencies are NOT drawn)
Modifies TechTree.lua so will be incompatible with any mod that also modifies that file. Should work with mods that change the existing tech tree, provided that it loads after them.