Transfer case
2H, 4H and 4L. Low range multiplies the engine's pull for climbs, bog holes and rock steps.
Diff locks
Rear, then front and rear. With open diffs a lifted wheel spins away your drive; locked, the others keep pulling.
Tyre pressure
Air down to float over mud and sand, and back up for the hard stuff.
Hill descent
Holds the truck back on steep drops, a wheel at a time, so you can stay off the brake.
Ground that gives
Clay, mud, bog, leaf litter, gravel, rock and water each grip, sink and spray differently, and rain changes all of them.
Day, dusk and night
Pick the hour and the weather for each track. After dark the high beams come on, and the tail lamps light under braking.
The bush
Manna gum, stringybark, ironbark, wattle, tree ferns, grass trees and bracken, each planted where it would grow.
Keyboard or controller
Keyboard and mouse, Xbox-style pads, and PlayStation controllers by USB or Bluetooth.