The current technology tree (aka “all buildings”):
Down and up from the old cities underground.
Carrierbots collect resources from production buildings.
Open living places will be filled as long as the average fullness is greater than 80%.
For mighty colonists only. Open living places will be filled as long as the average fullness is greater than 80%.
Processes stone debris into stone blocks for construction.
Extracts iron ore by piercing deep into the ice.
Processes nutrition into concentrated nutrition for the Mighty.
Supplies raw stone debris to a stone processing building.
Supplies nutritional resources to a food processing building.
Processes iron ore into metal for constrution. Only the mighty know how to operate a foundry.
Nutrition is turned into addictively delicious concentrated nutrition for the mighty.
Delivers food to hungry colonists.
The mighty recreationally consume concentrated nutrition in these establishments.
Repairbots remove damage from any building.
Defend the perimeter with mechs. Only mighty can operate mechs.
Produces energy used by advanced buildings.
The oxygen need rises with each new colonists and building.
Trade resources with other domes (you obviously need one teleport in each dome to trade).
Also see the tutorial for more help.