Arkham Asylum

Notable parts

• 4 parts come in a colour no other set has for that mould: Bar 1 x 4 x 2 (Dark Red) ×6; Glass for Window 1 x 4 x 6 (Yellowish Green) ×4; Wheel Arch, Mudguard 4 x 2 1/2 x 2 with 2 x 2 Plate (Medium Blue) ×4; Torso, Light Bluish Gray Arms and Hands (Light Bluish Gray).
• 1 printed part is only in this set: Tile 2 x 2 with Arkham Asylum Papers Print (Sand Blue).
• 9 parts appear in only a few other sets: Panel 3 x 3 x 6 Corner Wall without Bottom Indentations (Reddish Brown) ×10 — also in 76383 Hogwarts Moment: Potions Class; Brick Wedged 3 x 3 Facet (Reddish Brown) ×6 — also in 75826 King Pig's Castle; Animal, Snake, Small (Light Bluish Gray) — also in 75204 Sandspeeder; Minifig Hipwear Utility Belt (Orange) — also in 70909 Batcave Break-In (all Super Heroes DC); Brick Round Corner 6 x 6 x 2 (Black) ×2 — also in 60071 Hovercraft Arrest, 70008 Gorzan's Gorilla Striker; Tile 2 x 3 (Bright Light Blue) ×2 — also in 41711 Emma's Art School, 43015 Lionel Messi – Football Legend; Equipment Camera Handheld with Central Viewfinder (Red) — also in 70613 Garma Mecha Man, 70921 Harley Quinn Cannonball Attack; Brick Sloped 30° 1 x 2 x 2/3 (Medium Blue) ×2 — also in 41193 Aira & the Song of the Wind Dragon, 302107 Cinderella's Carriage, 76440 Triwizard Tournament: The Arrival; Equipment Magnifying Glass with Thick Frame and Solid Handle with Trans-Clear… (Black) — also in 70914 Bane Toxic Truck Attack, 70921 Harley Quinn Cannonball Attack, 8720865558554.
• 8 moulds first came out in 2017, including in this set: Minifig Hipwear Utility Belt ×2; Hair and Hat, Bowler, Dark Orange Wavy Shoulder Length Hair, with Bright Green…; Hair and Large Thick Glasses, Parted and Wavy with One Eye Squinting Print…; Hair Bushy Swept Back (The Joker); Hair Long Wavy with Curled Bangs, White Rose and Green Leaves Print; and 3 more.
• 8 existing moulds first came out in their colour in 2017, including in this set: Panel 3 x 3 x 6 Corner Wall without Bottom Indentations (Reddish Brown) ×10; Brick Sloped 30° 1 x 2 x 2/3 (Medium Blue) ×2; Tile 2 x 3 (Bright Light Blue) ×2; Window 1 x 4 x 1 2/3 with Spoked Rounded Top (Black) ×2; Animal, Snake, Small (Light Bluish Gray); and 3 more.
• 10 minifigure parts with their print are only in this set: Hips and White Legs with Black Belt and Silver Buckle Print (White); Hips with White Legs and Black Boots Pattern with Lab Coattails over Black… (White); Minifig Head Aaron Cash, Dual Sided, Eyebrows, Goatee, Firm Grin / Tense Print… (Reddish Brown); Minifig Head Harleen Quinzel (Harley Quinn), Dual Sided, Dark Red Glasses and… (Light Nougat); Torso Jacket with Pockets, Bright Green ID Badge and 'ARKHAM ASYLUM' on Back… (White); and 5 more.

Calculated from Rebrickable’s public set inventories, excluding sticker sheets and spare parts.