A text-based adventure linked to the real world of FNAF: Secret of the Mimic? Yes, please. Moon.exe is a mysterious program installed on all H.E.L.P.E.R terminals across Murray’s Costume Manor. Tied directly to David Murray and the Mimic, Moon.exe is important not only for its lore, but for the secret ending.
Here’s how to complete Moon.exe to get the best ending in FNAF: Secret of the Mimic. Sadly this conclusion cannot be a reality, for we all know where the Mimic ends up.
Table of contents
What is Moon.exe?

A programme on Murray’s Costume Manor’s H.E.L.P.E.R security terminals, Moon.exe is a text-based horror adventure game you can access during Secret of the Mimic at any time. You may struggle to complete it, however; there’s a small matter of 25 collectibles you need to find and place inside Moon. The collectibles take the form of presents, little gifts scattered around the Manor, left behind by Sun. Finding these and placing them inside the Inventory Tube System sends them directly into the game. Transferred into code, these gifts turn into new options in Moon.exe, indicated by the yellow text.
Not all gifts are relevant to progressing through the text-based adventure, but you need these to achieve your goal: To get the Glitched Permission for Secret of the Mimic‘s secret ending. I interpret the cryptic story in Moon.exe to be through the eyes of the Mimic, who’s copying different people (wearing their “masks”), and living through David Murray’s memories as he starts in a form of prison, and ends at David’s bedroom. I believe Moon is Edwin and Sun is Fiona, David’s parents.
Secret of the Mimic: Moon.exe guide

Here’s a full run-through from start to finish on what you need to select to beat Moon.exe.
House
- Open Closet and take the Hedgehog Mask.
- Examine Toy Box, take Plushie, and Small Key.
- Put on Hedgehog Mask.
- Open Window and Climb Out Window.
Dark Forest
- Examine Nest and take Chica Party Time Cup.
- Put Soup in Cup.
- Pick up Starbright Night Light.
- Throw Soup at the Gator.
- Examine Oak Tree and take Ranger Knife.
- Use Ranger Knife on Branch.
- Enter Forest Ruins
Forest Ruins
- Look at Statues and take Bowtie.
- Walk Down to the Pond and take Foxy Puppet.
- Examine Loom and take Sewing Kit.
- Look at the Hollow Stump and take Swing Bee Honey Bottle.
- Use Walking Stick.
Dark Forest Cabin
- Give Honey Bottle to the Bear.
- Open Cabin Door.
- Talk to Old Woman.
- Fix Fox Mask with Foxy Puppet.
- Fix Bear Mask with Bowtie.
- Fix Rabbit Mask with Sewing Kit.
- Talk to Old Woman again and take Baby Owl Mask.
- Exit Workbench and Leave the Cabin.
- Return to the Forest Cave and put on Baby Owl Mask to enter it.
Cave Ruins
- Enter East Passage.
- Head Deeper Into Cave.
- Examine Workbench and take Toy Hammer.
- Head Deeper Into Cave.
- Enter North Arch.
- Use Toy Hammer on Large Crystal and take Statue Left Arm.
- Open Small Door.
- Examine Wall Carving.
- Enter West Arch.
- Head Deeper into the Cave.
- Examine Pirate Ship and take Fishing Net.
- Examine and Walk Through Waterfall.
- Input Left, Right, Right, Left on Treasure Chest to take the Right Arm.
- Enter East Arch.
- Use Fishing Net on Pool and take Statue Head.
- Place Arms and Head on the Cave Hub Statue.
Welcome Show
- Take the Ticket Book.
- Open Security Door.
Jackie Showroom
- Examine Crate and Trap Jackie in the Rainy Day Boot.
- Open Birthday Present to get David Block.
- Enter Vent.
Big Top Showroom
- Give Ticket Book to Big Top.
- Open Birthday Present to get David’s Toy Ball.
- Enter the Rainbow Doors.
Doll Hospital
- Pickup Doctor’s Kit.
- Fix Broken Duck and Broken Elephant.
- Talk to Nurse Dollie.
- Pick up Birthday Cake.
- Use Elevator.
Chica’s Party Room
- Give Birthday Cake to Chica.
- Open Birthday Present to get White Tiger Doll.
- Climb up Stairs.
How to repair Freddy, Bonnie, and Foxy masks

You need to find three items to fix each iconic FNAF mask. Two are part of the 25 collectibles, but the last can be found inside the game, before you enter the Old Cabin.
Bowtie

Find and take the Bowtie off the ruined statue of the wedding couple (the Murrays) in the Dark Forest Ruins.
Sewing Kit

Find the locked door in the South Hall and input code 26294. You need Creator Permission to unlock the Cafeteria. This will take you to the other side of the shutter, next to the elevator that leads to Jackie in a Box. The Lil Sewing Kit is on the table in this shuttered area.
Pirate Foxy Puppet


Head back to Big Top Showroom after completing this area. Restore power at the Overflow machine so you can play the carnival games again. Go to the clown game and break the left side of the clown’s teeth. Don’t break all teeth otherwise the face will spin to a new set. Pass the game stand to freeze the game. Crouch-walk through the clown and hit the red button behind the game to enter the secret backstage area that leads into the off-limits Showroom.
The Mimic spawns in this backstage area. You need to use the generator downstairs and return to the entrance to take the lift. We’ve found purposely alerting the Mimic and hiding in the locker helps get through this section faster. You need Repair Permissions to enter the Showroom. The Mimic will patrol here too. Pull the lever to lift the moon and clouds set pieces so you can crouch-walk underneath them. Then take the list up and unlock the Staff Door. Through the Staff Door is one of the collectibles you need for Moon.exe. Opposite this door however is a Creator Permissions door, with the Pirate Foxy Puppet inside
Toy chest puzzle solution

The storybook in David’s Room goes: “He bounced the moon, spelled his name in the stars, and ran through the snow with the silent hunter.” You need to assign the three David toys, gifted to him on his birthdays, into the correct chests. The answer is:
- Moon chest: David’s Toy Ball
- Star chest: David Block
- Snow chest: White Tiger Doll
Enter the Closet and use the Upgrade Machine for the last time. Once your Data Diver upgrades with the Glitched Permission, you may reach the end of the game on New Game+ (as the White Tiger Doll cannot be obtained in your first playthrough), and initiate Parachute.exe.
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