Offworld Trading Company is a real-time strategy game in which money, not military force, is your true weapon. You must stake your claims to resources, then extract and develop them into goods that are used for advanced buildings and upgrades, all while buying and selling in the real time, player driven marketplace.
The marketplace is the core of Offworld Trading Company. Supply and demand are the only rules, and whoever is most able to effectively craft their strategy to buy low and sell high will usually take home the prize. Running steel mills without iron mines is perfectly possible if you’re willing to pay the market price for iron to keep them fed - which may even be a winning strategy, if iron is abundant and the market is flooded.
Along the way, upgrade your headquarters to increase the number of tiles you can claim. Construct special buildings like the Patent Office or Hacker Array to manipulate wide-ranging gameplay effects. Though direct conflict is not possible -- you’ll never send marines into an enemy base -- a variety of skullduggery is available on the black market. It isn’t cheap to pay someone to smuggle an EMP into a rival base, or hire pirates to raid a competitor’s supply line -- but it is extremely effective.
Ultimately, accumulating the capital needed to build an orbit-capable launch facility and thereby access to astoundingly lucrative offworld markets drives the endgame. The player who can buy up the shares of every rival’s company gains dominance over the Martian market for good.