Unlocks Spider Base after the Army Training to Mech Station troop-damage path.
Research it only in long matches where Mech Station is already reachable and replacement production can protect the investment.
This is a late priority in the Military branch. Use it when the effect matches the next bottleneck in your current build path.
Avoid it while you still need practical mid-game upgrades, because the $25B cost and 48-hour timer can leave your base exposed.
If the choice is unclear, open the Tech Advisor and compare this node against your current goal and bottleneck.
Open Tech AdvisorThese research nodes usually support the same timing or solve the next bottleneck.
Late special unlock that opens Mech Station before the Spider Base branch.
Makes tank and vehicle pushes harder to stop.
Expands storage so production chains waste fewer resources.