In The Crypts of Plumbous, the player has to fight alien ships who are trying to raid underground Nuclear waste storage for some unknown reason and unleash it on the planet. The game is a side scrolling shoot-em up, which is kind of reminiscent of Defender. There are various skill levels, from "Very Easy" to "Really Tough".
[source:mobygames]
Distribution : Retail - CommercialPlatform(s) : Atari 800
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