Syntraforce has multiple variants of Terran Siege Tanks. Alpha variant is slightly modified variant of original ones. Beta variant, based on tank-mode, got siege-mode replaced by additional cannon and special mechanism that allows the tank for multiple strike. Gamma variant, although based on Siege-mode, keeps its mobile movement while original armament got replaced with atomic cannon which has an increased splash range.

(Siege Tanks belongs to Blizzard)