Five Nights at Video Game's 4

Corrupted Cuphead is Nightmare Freddy

Corrupted Mugman is Nightmare Bonnie

Corrupted Bowser is Nightmare Foxy

Corrupted "Alice" is Nightmare Chica.

Plushman is Plushtrap.

Corrupted Enderman is Nightmare Golden Freddy.

Jack-O-Cuphead is Jack-O-Chica

Jack-O-Mugman is Jack-O-Bonnie

Night 1 Note: Hey, Have you seen your Brother? Well, He gave you Nightmares, don't ask how I know this, But he corrupted your favorite characters, Avoid them, Please. -Mom

Night 2 Note: Wow, You did it, Good job! You may just have a good chance of beating them yet. :D -Mom

Night 3 Note: I can't write many more notes, Two more after this one, I've run into some difficulties at the store and I can't write to you. -Mom

Night 4 Note: Well, Nice job! Your head hasn't been bitten off, So good job! -Mom

Night 5 Note: This is the last note I can write, Sooo, Please survive.. If you see Jack-O-Cuphead or Jack-O-Mugman tonight, Please shut your doors, Corrupted Enderman disregards the doors, Use the Cuphead plushie to make him think you're Cuphead, Perhaps it'll work.

Night 6 Note: YOU ARE A FU**ING IDIOT, KID.. YOU REALLY THINK I'D LET YOU LIVE? -Corrupted Cuphead

Night 7 Note: YOU ARE STUPID, WHY WOULD YOU TRY THIS? - Corrupted Enderman

Night 8 Note: GIVE UP. - Corrupted Bowser.

If the player should complete Night 9, They will be rewarded with a new level, Fun with Plushman.

This works like Fun with Plushtrap from FNAF 4, But instead Megaman is taking the role of Plushtrap, If you survive him, You will be rewarded with a Enderman head on the game, If the player should go back to the main screen and click the Enderman head, You will get a new game entirely, Five Nights with Enderman.

Enderman will replace Cuphead, and he will hunt you down.

But, Should the player neglect the Enderman face, You will be rewarded with a minifigure of Evil Cove on your bed, Clicking it will give you the following minigame.

K-I-L-L-T-H-E-M.

In this minigame, You play as Infinite who is trying to destroy Bowser, If Bowser is destroyed, The screen will fade to grey static, Signifying the end of the game.