Robo-harvesters are multi-purpose terran vehicle used for agriculture. Running on vespene gas and moving on treads, their functions include bulldozing, tilling, destroying boulders, planting and harvesting crops such as triticale-wheat. Larger variants possess rock-crushing machinery, while others are equipped with flamethrowers to clear forests to make way for arable land and/or boulder-blasters, although a boulder catapault may be used instead of the latter, flinging boulders aside instead of shatterring them.