My perfect scary FNAF game would be set in the mid-2000s. The animatronics would all be the Funtime variants (incl. Chica) but retextured to their original colors. There would also be Forsaken Variants of these ‘tronics (think Withered from FNAF2) that are all smashed up and real creepy. There would be two doors, the monitor (except this time it’s a bank of computer monitors that you individually zoom in and out at) and the oxygen vent, when if not refreshed, causes absolutely terrifying hallucinations, causes you to black out, and introduces subtle but creepy technical glitches (such as animatronics reverting from Forsaken to Modern in camera views, the inability of a door light to work, etc.) Bluebab (a creepy dark blue version of Bidybab with flashing eyes like Electrobab) can AND WILL occasionally appear as two white eyes in the oxygen vent, his eyes will slowly turn orange. Once his eyes turn orange, he will stretch out of the vent and jumpscare you, resulting in a Game Over. The only way to get rid of Bluebab is to refresh the vent within 2 seconds of a small green light blinking. The eyes will turn white, blink twice, then turn purple for a fraction of a second (to start the rumour mill when someone finds it)