Earthsiege 2 is a mecha-style vehicle simulation game developed by Dynamix, produced by Frank Evers (NYPH), and released in 1996. Earthsiege 2 is set in the Earthsiege universe, which contains its predecessors Earthsiege (1994) and Battledrome (1995), as well as the action game Hunter Hunted (1996), strategy games MissionForce: CyberStorm (1997) and Cyberstorm 2: Corporate Wars (1998), simulation Starsiege (1999), and first-person shooters Starsiege: Tribes (1999), Tribes 2 (2001), Tribes Aerial Assault (2002), Tribes: Vengeance (2004) and Tribes: Ascend (2012).

As a simulation, Earthsiege 2 gives players the opportunity to pilot massive bipedal war machines known as HERCULANs (Humaniform-Emulation Roboticized Combat Unit with Leg-Articulated Navigation) (or 'HERCs' for short). Set in the 26th or 27th century, Earthsiege 2 features advanced weapons and technology for waging war. Earthsiege 2 takes place across North America, South America, Antarctica, Asia, Australia, Europe, and the moon.

Earthsiege 2 features a more advanced engine than Earthsiege, increasing the game's maximum resolution to 640*480. Additionally, the game features much more detailed terrain than its predecessor. Earthsiege 2 has 3D rolling terrain rather than the flat landscape of Earthsiege. Furthermore, video briefings and debriefings, along with included squadmate voices, add to the atmosphere of the game.

For twenty years, the remnants of the human race, fought against the Cybrid oppressors aided by pre-Cybrid Hercs. After the destruction of the Cybrid army, the humans maintained their control on Earth, but another Cybrid army came from space colonies for another attack. The humans were able to prevent initial landings, but were about to face the Cybrids as they built their strength on the moon.