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Gridfall’s Urbex doors open into three themes: Underground, Residential, and Office. Every entrance has an Energy cost of 2, 5, or 10, and some of them stay shut until you bring the right tool or item.
The themes don’t drop the same loot. Each one has its own artifacts and a few outfit sets of its own, so the door you choose decides which fragments and materials you can find inside.
11 Gridfall Urbex Entrances and Their Requirements
Five entrances lead to the Underground theme, three to Residential, and three to Office. Five of them need no tools at all. The locked ones need Hammer Lv.3, Pruners Lv.3, Rail Boots, or a Propeller.
Each entrance below has two screenshots: the Gridfall map with the player standing at the door, and the door itself.
Underground Entrances
Historical Quarter
- Energy cost: 2
- Requirement: no tools


Neon Alley
- Energy cost: 5
- Requirement: Pruners Lv.3 or Hammer Lv.3


Patchwork Plaza
- Energy cost: 5
- Requirement: Hammer Lv.3


Wild Lab
- Energy cost: 5
- Requirement: Hammer Lv.3


Concrete Jungle
- Energy cost: 10
- Requirement: Pruners Lv.3


Residential Entrances
Neon Alley 1
- Energy cost: 5
- Requirement: no tools


Neon Alley 2
- Energy cost: 2
- Requirement: no tools


Patchwork Plaza
- Energy cost: 10
- Requirement: Pruners Lv.3, Hammer Lv.3, Rail Boots, or Propeller


Office Entrances
Historical Quarter 1
- Energy cost: 2
- Requirement: no tools


Historical Quarter 2
- Energy cost: 5
- Requirement: no tools


Concrete Jungle
- Energy cost: 10
- Requirement: Rail Boots or Propeller


Tools for Locked Entrances
Both Lv.3 tools are unlocked by research at the Museum Research Station in Gridfall and crafted at a Project Station (Lv 3).
- Hammer Lv.3: unlocked by the Advanced Mechanics research. Needs 1 Hammer Lv.2, 5 Electronic Scraps, 3 Rust Resistant Alloy, and 1 Lignin.
- Pruners Lv.3: unlocked by the Nurturing Nature research. Needs 1 Pruners Lv.2, 2 Copper Bars, 5 Electronic Scraps, and 3 Rust Resistant Alloy.
Loot by Urbex Theme
Artifacts come in three tiers: battered, used, and spotless. All tiers of an artifact drop in the same theme. Outfit fragments come from spots and artifacts inside the theme, and every Urbex set can also drop from Treasure Chests and Golden Treasure Chests. The Emo, Wolf, Hip-Hop, Eclipse, and Kawaii Goth sets drop in all three themes.
Inside Urbex you can also gather Magnets from Old Servers and Fabric Scraps from Clothes Piles.
Underground
- Artifacts: Lava Lamp, Puzzle Cube, Ring Toss, Kevin Says, Gone Fishin’, Fidget Spinner
- Materials from artifacts: Sand, Electronic Scraps, Gears, Rusted Metal, Rust Resistant Alloy
- Theme-only outfit sets: Decora, Streetwear
Residential
- Artifacts: Pet Pal, Game Cartridge, Lofufu, Fooby, Ruby Doll, Action Figure, Rubber Duck
- Materials from artifacts: Glass Cullets, Electronic Scraps, Magnets, Fabric Scraps, Carbon Fiber
- Theme-only outfit sets: Dreamy, Racing
Office
- Artifacts: Game Guy, Walkboy, Boombox, YouPod, Blockia, Techshot, Floppy Disk
- Materials from artifacts: Scrap Wire, Electronic Scraps, Magnets, Cardboard, Power Cable
- Theme-only outfit sets: Neo-Noir, Cut-Out
Credit: @EarlyGrayFae