Total Annihilation/Core Tech Tree

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The bold units and structures in the column are required for production of units below them within a particular column.

Commander
Tier 1 Structures Solar CollectorEnergy StorageMetal ExtractorLight Laser Tower
Wind GeneratorMetal StorageMetal MakerRadar Tower
KBot LabVehicle PlantAirfieldShipyard
Tier 1 Units AKWeaselFinkSearcher
StormInstigatorAvengerEnforcer
CrasherSlasherShadowSnake
ThudRaiderValkyrieEnvoy
Construction KBotConstruction VehicleConstruction AircraftConstruction Ship
Tier 2 Structures Gaat GunGaat GunGaat GunTidal Generator
PulverizerPulverizerPulverizerSonar Station
PunisherPunisherPunisherTorpedo Launcher
Dragon's TeethDragon's TeethDragon's TeethLight Laser Tower
Geothermal PowerplantGeothermal PowerplantGeothermal Powerplant
Advanced KBot LabAdvanced Vehicle PlantAdvanced Aircraft PlantAdvanced Shipyard
Tier 2 Units The CanReaperVampShark
PyroPillagerHurricaneExecutioner
RoachCrockRapierWarlord
SpectreDiplomatTitanHive
Informer Hydra
Deleter
Goliath
Advanced Construction KBotAdvanced Construction VehicleAdvanced Construction AircraftAdvanced Construction Ship
Tier 3 Structures IntimidatorIntimidatorIntimidator
Doomsday MachineDoomsday MachineDoomsday Machine
SilencerSilencerSilencer
FortitudeFortitudeFortitude
Advanced Radar TowerAdvanced Radar TowerAdvanced Radar Tower
Aircraft Repair PlatformAircraft Repair PlatformAircraft Repair Platform
Fusion ReactorFusion ReactorFusion Reactor
Moho MineMoho MineMoho Mine