Primitive Nightmare incorporates many elements of classic coin-op shooters with some strategic elements added for a unique challenge.
Revision 3 is a bug-fixed version with automatic VMU high score saving.
Gameplay hints for Primitive Nightmare can be found here.
Cover art by DCFanatic can be found here. Much thanks to him!
Downloads
Primitive Nightmare Revision 3 for Dreamcast
CDI image - 3 Mb
GDEMU image - 2.7 Mb