You pilot a mecha (giant robot) inspired by an Egyptian deity (Anubis, Horus or Sekhmet; each has its own pecualiarities and exclusive weapons) and fight against other mechas in various arenas (full of buildings, elevated passegeways, underground areas, etc.) with egyptian textures and names.
In the single-player campaing, each arena offers 20 missions of progressive difficulty (more weapons become available in later missions, but you may have to face up 5 enemies at once).
Some missions are fought by night. Sometimes you have one or two teammates (controlled by the computer).
Each team (even if composed by a single mecha) has a single supply ship dropping equipment at request. Extra equipment can also be found scattered in the arena.
The supply ship may also drop "towers". They become active after 30 seconds and if there are enough of them around (no more than four can be placed in the same whereabouts) a countdown will begin: after five minutes the team will win (in the meantime, the opponents may destroy enough towers to nullify the countdown).
Each team can win (or lose) either with towers or by destroying every mecha of the other team thrice.
Destroyed mechas respawn, but the third time one is killed, it is out of the game; in multi-player games he lingers around as a "ghost" (unable to interact with anything, but may still be used as a scout by the team).
Up to six mechas can enter the arena, but there are always two teams: Ra (yellow) and Osiris (blue).