Sorry , I´m too stressed with work and unlocked Mars Age when I should not have - can only blame myself for that blunder.
But I really do not get this age – appears like just a handbrake advanced promethium/Orichallumn game type – new Units yes, but the goods production on the colony does not seam to make much sense or rather it is very expensive in contrary to using buildings in the City upgraded to Mars Age. A lot to Mars Ore to be collected to unlock techs and then properly stockpile for the Ceres Era. Hmmm.
The rest of tech tree is full of Life Support variations and some more classic house building and production buildings which I am guessing a lot of players in the age will not really need due to high level GBs covering population, happiness, coins and supplies. (One perhaps weird question (you judge) – does Colony buildings have a chance of giving Diamonds?).
Anyway got to run again
have a nice evening or whatever it is where you are...