Trading scheme

[Jamaica_MURR]

Warning: Bad english.

I offer to include in game the following trading scheme:

To become trade with spaceships player must build special building - spaceport. (or building with better name)

Player need to produce "money" - superconductors (1 alien pink blob + lake of sulfuric acid + something else)

For superconductors player can buy items that he can't produce (hovertank, fastest drones, invisible suit, one more body for use it at far side of factory, orbital battle probe for calling orbital strikes once at hour, chemical reactor to do greatest polluted area and solve energy problem without mainstream nucler reactor, box of gummy bears and something less useful)

That's all we need to be happier.