Antibaar is a cold terrestrial world with an atmosphere of methane and argon. Its frozen surface is mainly composed of iron with deposits of magnesium. The world has been noted as a possible target for long-term terraforming; if the atmosphere could be increased to the thickness of Earth's the global average temperature would rise by 10 degree Celcius.

Antibaar's combination of low temperatures, high speed surface winds, and low visibility make it dangerous to explore on foot.

Note: The Mako can land here. There are deposits of mercury, lithium and magnesium. There is a crashed probe to be salvaged here. There is also a Thresher Maw spawn here. A Prothean Data Disc can also be recovered here. There is a geth outpost here for UNC: Geth Incursions.