Steer your commander with the pointer. Grab supply crates, drag any building button from the bar onto the map to place it (Depots snap onto ore deposits, then earn funds passively), raise a base, buy troops and take down rival commanders. Keys: Q-Y recruit, 1-8 build, U upgrade (or drag Upgrade onto a building), Space split army. The bigger your army, the slower you move. Hold a troop button to keep buying. Press A (or the Alliances button) to team up with commanders. Troop cap 1000, max 9 Fortresses, one FOB. Hold your finger on any building for 6 seconds to sell it for half. Your view zooms out as your army grows. Buy a Destroyer to sail the northern ocean: drag it to the shore, walk aboard, then double-tap it to take the helm (holds 100 troops). While dragging a Barrier or ICBM Site, use the joystick to rotate it. The ICBM Site needs a Fortress and $10,000; each launch costs $2,000.