R-Type/Nightmare Fuel


 * Final's worst ending. You never even realise what's wrong...
 * The Bydo Empire enjoy using this as a part of their total warfare against humanity on all fronts. They want humanity to feel fear and confusion as to what they are.
 * Delta's Final Stage. That is all.
 * Not to mention the entire concept of the Bydo's "wave" form. Imagine that for a second. A wave, as quick and unobtrusive as a sound. And all you need is to get close for it to begin taking over.
 * R-Type 3 features a level which appears to be set in a gigantic alien's stomach, until you reach the end of the level and the boss is a series of orifices that deploy giant sperm at you. And then there's Cyst / Gomander, one of the most disgusting vagina monsters ever created.
 * The Final version of Dobkeratops features a phallic tongue that appears to deploy sperm. The vagina boss also makes a comeback.
 * Stage 5 of Delta. Fending off enemies from the original R-Type wouldn't be so bad if not for said enemies being dilapidated husks and the acid-trip landscape. And things get worse in the last two stages.
 * Stage 6 of Delta has a space station... infested with flesh and blood and gore. As for the enemies- Body Horror dog-things, bouncing brains, some organic ship, etc.
 * The Sweet Memories in Final, meanwhile, is Nightmare Fuel on account of literal Nightmare Fuel. That vessel's Dread Wave Cannon is actually loaded with the pilot's own nightmares.
 * "Dread Wave Cannon" is just a nickname, however. Its real name is "Illusion Wave Cannon", and the images you see when it fires are not indescribable horrors straight from the darkest parts of the pilot's mind, but...images of the planets Saturn and Venus, and the Greek Parthenon.