The New York sewage pipelines were ne'er like this. You've fallen down a concealed hole into a universe of animals so alarming they'd frighten the rats away. You can dread and perish, or blare your way along an eternal maze of burrows in hunt of clandestine passages to your escape. Masters of the Caverns lay ready and waiting - prehistorical animals so mighty and big they literally fill your screen. Load your armory and get at the ready for Blaster Master.