When an enemy target is detected, the Rollermine will pop out of hiding and roll towards it in a relatively straight line. Upon landing, the mines will remain inert or, if they land on softer terrain like soil or gravel, they will burrow themselves into the ground, remaining almost invisible. Extensively used along the coastal roads, they are deployed from the air by Combine Dropships, in groups of two to four. A reprogrammed Rollermine exchanges jolts with an unaltered one in the Citadel.Īs the name implies, Rollermines roll towards enemies and electrocute them via close-range electric shocks.