Players take the role of Lightning Alpha, who battles against wave after wave of deadly gigantic insect and robot enemies. Insect Armageddon predominately takes place in the city of New Detroit, the target of a concentrated bug invasion that only the EDF can stop. The graphics have been greatly improved, but still retain the arcade-shooter physics of its predecessor. Vehicle controls have been fixed, with improved tank and mecha vehicles that can be manned by more than one player. credits are accumulated in-game which is used for a wide variety of tasks.