Raiden Fighters 2: Operation Hell Dive (1997)

Raiden Fighters 2 takes place four years after the events of the first game. In the aftermath, a few surviving guerrilla groups gather under a dictator. Together, this rogue group forms a new nation and launches a salvo of attacks on the protagonist fighting forces. In response to these surprise attacks, the government recalls the previous troops into action once again, outfitted with retooled ordinances.