An extension of the basic vehicle upgrade system. Higher tiered vehicles will have higher tiered upgrades available to them, which cost a larger investment of work and resources, but are vastly more powerful than their tier 1 cousins.
An extension of the basic vehicle upgrade system. Higher tiered vehicles will have higher tiered upgrades available to them, which cost a larger investment of work and resources, but are vastly more powerful than their tier 1 cousins.
