MissionForce: CyberStorm (commonly referred to as "CyberStorm") is a turn-based strategy game developed by Dynamix and published in 1996 by Sierra Entertainment. The game is set in the Earthsiege universe created by Dynamix, and the player control units of HERCULANs (Humaniform-Emulation Roboticized Combat Unit with Leg-Articulated Navigation): bipedal warmachines of varying size and construct, more commonly known as HERCs.