There are 72 different masks that can be obtained by the player. The masks act like achievements in the game and can be awarded for completing various tasks. All masks collected by the player can be seen in the Masks menu. In this menu, they can be equipped by clicking on them.
Some masks spawn on the floor and are picked up by walking into them; they are entity masks. Other are directly equipped when they are unlocked, so they cannot be found as an entity.
1: Default mask[]
Obtained by: Starting the game
Entity: No
Appearance: Normal mask: Light green with black eyes (shaped as -), nose (shaped as >), and smile
Note: This is one of only two (known) masks that can be awarded at the start of the game, the other being Locked.
2: Crying mask[]
Obtained by: Filling the slime bar in the third (buff) form
Entity: No
Appearance: Normal mask with red lines (tears) coming down from eyes
3: Unknown mask[]
Obtained by: Tapping the mask several times in the mask menu. The game will start with the mask awarded
Entity: No
Appearance: Same as a locked mask: light gray with darker gray question mark
Note: This is one of only two (known) masks that can awarded at the start of the game, the other being Default Mask.
4: Bear mask[]
Obtained by: Reaching the other side of the gap in the second form tutorial. A worn out bear head can sometimes be at the bottom for reference
Entity: Yes
Appearance: A faded brown colored bear mask with two 'X' eyes. Similar to the tutorial bear
5: Sleep mask[]
Obtained by: Staying still during a certain period of time.
Entity: No
Appearance: Blue carnival mask with purple eyes
6: Dirt mask[]
Obtained by: Reaching a very tall platform at the left side of the start point
Entity: Yes
Appearance: Tan colored, oval shaped mask with holes for eyes and mouth
Note: Getting to the platform is easier with the second form, as doing it with the first form/at the moment you spawn will most likely lead to death.
7: Sugar mask[]
Obtained by: Breaking the wall at the left of the start point with the third (buff) form; running through the corridor, the mask lies on a pillar at the bottom
Entity: Yes
Appearance: White, similarly shaped as the normal mask, but with a exaggerated 'D' shaped smile and striped pointy horns for eyes, colored white, red, green and yellow from the start to the peaks
8: Arrow mask[]
Obtained by: Going all the way to the end of the 4th Biome and coming back to the start.
Entity: No
Appearance: A blue mask with "plus" eyes and a yellow lightning-like arrow coming from the nose.
9: Dog mask[]
Obtained by: Petting a dog 3 times in one run
Entity: No
Appearance: Dog head
10: Neutral Mask[]
Obtained by: Ending the second biome in a neutral run
Entity: No
Appearance: A blue shell with sleepy eyes
11: Peace mask[]
Obtained by: Ending the first biome in a Pacific run
Entity: No
Appearance: Yellowish green mask with closed eyes and an extended smile.
12: Heart Mask[]
Obtained by: Achieving a True Pacifist run, which is petting a dog while being in a Pacifist run.
Entity: No
Appearance: A pink heart with smiley eyes
13: Pipe mask[]
Obtained by: Random, can only be obtained in rooms from the Facility biome (first biome).
Entity: Yes
Appearance: Small red, circular mask with + shaped eyes
Note: Unlike other masks, this spawns on the floor and is picked up by walking into it.
14: Lab mask[]
Obtained by: Random, can only be obtained in rooms from the Lab biome (second biome).
Entity: Yes
Appearance: Test tube obstacle from lab biome
Note: Unlike other masks, this spawns on the floor and is picked up by walking into it.
15: Plant mask[]
Obtained by: Random, can only be obtained in rooms from the Plant biome (Third biome).
Entity: Yes
Appearance: Small tree
Note: Unlike other masks, this spawns on the floor and is picked up by walking into it.
16: Stoplight mask[]
Obtained by: Random, can only be obtained in rooms from the City biome (fourth biome).
Entity: Yes
Appearance: Gray, normal shaped mask mask with red and green street lights as eyes
Note: Unlike other masks, this spawns on the floor and is picked up by walking into it.
17: Vener mask[]
Obtained by: Going in the underground room. This room appears in the Facility biome and can only be achieved by going in in Slug form and getting enough juice afterwards to come back to Human form.
Entity: Yes
Appearance: A soft yellow colored, square shaped face, smooth edges, big eyebrows and an annoyed face.
18: Body mask[]
Obtained by: In certain room pattern (Facility...), entering through a little gap by jumping in in Human form, so reaching a little safe room with a Cassie beside. Then, waiting until you revert to the Slime form in order to squeeze through the tunnel at your left, then jumping up to the platform and going right.
Entity: Yes
Appearance: A yellowish green doll in a black tuxedo. Android version has a red necktie.
Note: It's better to left the Cassie for later exiting through the vertical gap, otherwise you would soft-lock yourself.
19: Scarlet mask[]
Obtained by: In certain room appearing above the ground.
Entity: ???
Appearance: Purple mask with frowning face and a thin protrusion in the middle above and below.
20: Dino mask[]
Obtained by: In certain room floating above the ground in the Plant biome. A pyramid of flowers below the room's entrance. To reach the entrance, the player needs to be in the slime form, and requires items that assist with jumping or two flowers stacked on each other. Three very high jumps follow afterwards.
Entity: Yes
Appearance: Dark green dinosaur / lizard with long snout. Has cute cartoony eyes.
21: Hat mask[]
Obtained by: From a floating structure in the grey city biome. The structure features a parkour obby of narrow floating islands with traffic lights and the mask is at the very top after completing it..
Entity: Yes
Appearance: Red hat
22: Book mask[]
Obtained by: Reaching a platform on top of a room with a pile of tubes and a flower above. You have to break not more than 2 tubes and then jump on the flower to reach the platform
Entity: Yes
Appearance: Open book with face drawn on it
23: Lucky mask[]
Obtained by: May appear atop (and fall along with) test tubes stacked in way where only the tube on the bottom can be broken.
Entity: Yes
Appearance: Green semicircle shaped mask with bright green circular eyes (looks like glass). A green line runs through the middle from top to bottom and a very long thin protrusion stretched below.
24: Demon mask[]
Obtained by: Scoring 200 rooms in one run.
Entity: Yes
Appearance: A red mask with a single yellow eye and horns
25: Reverse mask[]
Obtained by: Buying it at the shop
Entity: Yes
Appearance: A crimson mask with + eyes and two smiles on the top and the bottom of the mask
26: Wood mask[]
Obtained by: Buying it at the shop
Entity: Yes
Appearance: Wood looking mask with yellow rectangular holes for eyes, green strips and low saturated yellow colored thorns around it
27: Stone mask[]
Obtained by: Buying it at the shop
Entity: Yes
Appearance: Grey hood-shaped mask with a single "plus" eye in the center, joined by dark gray lines from the 4 directions.
28: Neon mask[]
Obtained by: Buying it at the shop.
Entity: Yes
Appearance: Purple mask with blue dots on the sides, with a trembling mouth and spiral eyes
29: Tiger mask[]
Obtained by: Finding the shopkeeper's lost cat and bringing it back to him with cat food
Entity: Yes
Appearance: Orange feline mask with yellow eyes and a white snout
30: Bird mask[]
Obtained by: Bringing the cat to the parrot piñata room with cat food
Entity: Yes
Appearance: Green parrot head
31: Fish mask[]
Obtained by: Destroying the ice with a fish inside, only appears in Lab biome.
Entity: Yes
Appearance: A blue fish inside a glass box
32: Painting mask[]
Obtained by: Using both the bell and the gong in a room with 2 microphones
Entity: Yes
Appearance: A portrait painting in a frame
33: Basic Enemy mask[]
Obtained by: Finding the white room without killing any basic enemy.
Entity: Yes
Appearance: The head of the basic enemy
Note: This mask doesn't appear on the game's steam achievements page.
34: Gun mask[]
Obtained by: Finding the white room without killing any gun enemy.
Entity: Yes
Appearance: A light gray cubic gun
35: Marble dog mask[]
Obtained by: Finding the white room without killing any wolf.
Entity: Yes
Appearance: A white head of a wolf
36: Heart guy mask[]
Obtained by: Finding the white room without killing any heart guy.
Entity: Yes
Appearance: The head of the heart guy
37: Drone mask[]
Obtained by: Finding the white room without killing any drone.
Entity: Yes
Appearance: A drone
38: Mecha-dog mask[]
Obtained by: Bringing a mecha-dog to the white room.
Entity: Yes
Appearance: A white head of a mecha-dog
39: Lust mask[]
Obtained by: Finding the white room without destroying any juice can.
Entity: Yes
Appearance: A yellow lyre-form mask in two parts, with a cross-shaped hole in the middle
40: Marble mask[]
Obtained by: Reaching the white room without getting hit. Upon achieving this mask, the white room is fitted with a non-boxable large statue of the buff form player. This statue holds a slime form player in one hand, and, in the other, a human form player with wings on their back and a lyre in both hands.
Entity: Yes
Appearance: Same as default, but a white colour.
41: Dodo mask[]
Obtained by: Clicking the creator's name several times in a row in the Credits
Entity: No
Appearance: A yellow H-form mask with eyes on the left part, the right part is the nose.
Note: It refers to a game from the same creator : The Dodo Archipelago
42: Gong mask[]
Obtained by: Killing any enemy with the third form's gong
Entity: Yes
Appearance: Just identical to the Gong plate: a bronze circle with the default mask's facece
43: Sheet mask[]
Obtained by: Ending the Lab biome in a U-turn run
Entity: No
Appearance: A purple paper page with a purple eye drawn on it
44: Alien mask[]
Obtained by: Grabbing it before it flies out of reach; It can appear from the bottom of the screen in front of the starting position and it will start levitating, the chances of it spawning are random
Entity: ???
Appearance: Green mask with a turtle shell-like grid on it, a blue, wide "o" eye, a little "-" mouth, lime horns and a long chin with a lime end
45: Samuraï mask[]
Obtained by: Slicing 3 enemies with the Sabre at the same time
Entity: Yes
Appearance: Red Kabuto with a golden "U" Maedate on it, a pair of pinkish red shades and a metal plate resembling a mouth
46: Delta mask[]
Obtained by: Killing a Mecha Dog with the Sabre
Entity: Yes
Appearance: A hollow triangle with the tip down, colored in a gradient that starts yellow on the upper part and goes cyan to the bottom
47: Ring Mask[]
Obtained by: Killing a Mecha Dog with the Shotgun
Entity: Yes
Appearance: A circle, colored in an rainbow sequence of colors
48: Purgatory mask[]
Obtained by: Going down through a hole that may spawn in a scrap yard zone
Entity: ???
Appearance: A faded pink face with distorted form, it's smiling but its eyes are depressed
49: Fox mask[]
Obtained by: Defeating the fox in the dark shop
Entity: ???
Appearance: Orange fox mask, like the one of the dark shop keeper
50: Fishbone mask[]
Obtained by: Throwing a corrupting or noncorrupting statue at an enemy. The statue should kill the enemy and change the biome
Entity: Yes
Appearance: A dark blue mask. The bottom part is a small semicircle with yellowish green circular eyes. A trident shape is fixed atop. As an entity before being picked up, the mask will constantly turn and face the same direction of a player already wearing a fishbone mask.
51: Not a sword mask[]
Obtained by: Collecting the Mecha Dog in a box.
Entity: ???
Appearance: Blueish green mask with a pattern consisting of circles within circles. No mouth, but reddish orange eyes. Three thick protrusions atop the mask.
52: Beast mask[]
Obtained by: Placing a corrupting statue in the marble white room, turning all statues into beast statues.
Entity: ???
Appearance: Resembles the head of a beast
53: ???[]
Obtained by: ???
Entity: ???
Appearance: ???
54: ???[]
Obtained by: ???
Entity: ???
Appearance: ???
55: Neon mask 2[]
Obtained by: Buying it at the shop. A neon mask at the shop will become neon mask 2 when the store is corrupted.
Entity: Yes
Appearance: Similar to neon mask but shape is upside down. Has spiral eyes and "ߍ" shaped mouth
56: ???[]
Obtained by: ???
Entity: ???
Appearance: ???
57: Nose mask[]
Obtained by: ???
Entity: ???
Appearance: Faceless white mask. A white protrusion from the middle with a red circle at the base. A red line at the bottom too.
58: Bottle mask[]
Obtained by: In a certain underground room in the pink coloured biome. The entrance to the room has a test tube blocking the way and a slime jar. The room below this entrance has many acidic test tubes blocking the way to the mask. The noncorrupting statue may be needed.
Entity: Yes
Appearance: Blueish green watering-can-like mask with pointed smile. Eyes and nose are replaced by a a thick pink-coloured cylindrical protrusion with a hole in the middle.
59: Happy mask[]
Obtained by: ???
Entity: ???
Appearance: Light green dinosaur / lizard mask. It has a frill, outward cheeks and a chubby neck. Its eyes and mouth are black lines and the smile they make face you (not to the side).
60: Onion mask[]
Obtained by: In some pink coloured biomes, this mask sits atop a floating structure, which has flowers below it.
Entity: Yes
Appearance: Like an onion plant. The face is on a yellow bulb and the hair is the leaves.
61: Flower mask[]
Obtained by: In a certain room blocked by a large pink block.
Entity: Yes
Appearance: Pot plant with pink flower. No facial features.
62: ???[]
Obtained by: ???
Entity: ???
Appearance: ???
63: Caregiver mask[]
Obtained by: ???
Entity: Yes
Appearance: A surgical mask with a face drawn on it.
64: Fire mask[]
Obtained by: In a certain floating room in the pink coloured biome. The entrance is blocked by a pink coloured block. The player reaches the entrance by standing on a tall enough object and collecting the cube in a box. The player can then jump through in the slime form.
Entity: Yes
Appearance: Faceless fiery shaped mask. Central part is a red circle, middle part is orange, and the outside layer is a yellow colour with a hair-like shape.
65: ???[]
Obtained by: ???
Entity: ???
Appearance: ???
66: ???[]
Obtained by: ???
Entity: ???
Appearance: ???
67: ???[]
Obtained by: ???
Entity: ???
Appearance: ???
68: Slug mask[]
Obtained by: Only playing as slug form and reaching the marble white room.
Entity: Yes
Appearance: Pale yellow mask with two pairs of tentacles and a plus sign as a face.
69: ???[]
Obtained by: ???
Entity: ???
Appearance: ???
70: Cloth mask[]
Obtained by: After corrupting the environment to a certain high extent, a dark biome appears once. The cloth mask resides here, among corrupted slime jars and cups.
Entity: Yes
Appearance: Broad and thin red arching piece with an arrow pointing upwards and piercing the two ends of the arch.
71: Epic fox mask[]
Obtained by: Defeating the fox who wears this mask in the dark shop.
Entity: ???
Appearance: Same as true fox mask, but white and with red lines around the face.
72: ???[]
Obtained by: ???
Entity: ???
Appearance: ???