Siege tank (StarCraft II)

The siege tank provides the terrans with mobile, long range firepower.

The siege tank continues to function as it did in previous games with the dual tank and artillery modes, except it doesn't require as much support as is needed in the original StarCraft. The tank cannot fire when moving, leaving the tank vulnerable to attacks by melee units.

As of February 2010, the siege tank received new animations; it bobs slightly when it stops moving.

Siege tanks are strong against marines and hydralisks, and weak against thors, immortals, and zerglings.

Wings of Liberty
Siege tanks are unlocked by playing the mission The Dig.

Strategies
Groups of siege tanks do not "overfire". If one zergling attacks 12 tanks, only one tank fires and no shells are wasted. This means that the long shot cooldown can no longer be exploited by an enemy attempting this strategy, further increasing the tank's power and versatility.

Splitting tanks in multiple groups prevents a tank column from entering siege mode all at once and out of position. Other units should screen tanks in siege mode; this prevents tanks from being hit from friendly shock cannon fire when enemy units close the minimum range.

Building an army of both siege tanks and Thors is possible, but expensive. The combination is difficult to stop.