Arkham Asylum

What there is most of

• Brick Special 1 x 1 with Stud on 1 Side · Reddish Brown×57
• Plate Round 1 x 1 with Open Stud · Black×55
• Brick Special 1 x 2 with Masonry Brick Profile · Reddish Brown×54
• Brick 1 x 3 · Reddish Brown×46
• Tile Special 1 x 2 Grille with Bottom Groove · Flat Silver×43
• Plate 1 x 2 · Reddish Brown×39
• Bar 6L with Stop Ring · Black×37
• Brick Special 1 x 2 with Masonry Brick Profile · Light Bluish Gray×35
• Tile 2 x 2 with Groove · Dark Bluish Gray×35
• Brick 1 x 4 · Dark Bluish Gray×31
• Glass for Window 1 x 2 x 2 Flat · Trans-Clear×29
• Fence Lattice 1 x 4 x 1 · Black×27
• Plate 1 x 1 · Reddish Brown×27
• Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side · Reddish Brown×25
• Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) · Light Bluish Gray×25
• Tile 1 x 3 · Dark Bluish Gray×25
• Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] · White×25
• Window 1 x 2 x 2 Flat Front · Black×25
• Panel 1 x 1 x 1 Corner · Black×24
• Plate Round 1 x 1 with Solid Stud · Flat Silver×24

The twenty most numerous parts, longest bar first. Start a checklist to see all 573 part types and tick them off as you find them.