Strict mode
The default. It holds you to the game's connectivity rules: you can only dig down where there is an elevator, and you cannot delete a room that would cut others off from the vault door.
UNOFFICIAL · RUNS IN THE BROWSER · NO ACCOUNT
Plan the vault before you dig.
A layout planner for Fallout Shelter. Lay rooms out on the 26-cell grid across all 25 floors and see at once what the game itself would not let you build — a floor with no elevator reaching it, a room whose removal would cut the rest off from the vault door, a merge that does not line up.
No account, nothing to sign up for. Your vault never leaves your browser — it lives in a JSON file and in the link you share.
The editor at actual size, floors 1–7 of 25. Eight rooms of three cells plus two elevator shafts — 26 cells to a floor.
WHAT YOU GET
Free mode
Switches those two rules off so you can sketch in any order and fill the elevators in later. Geometry still holds: rooms never overlap and never run past the edge of a floor.
Save, share, export
Keep a layout as a JSON file, copy a link that carries the whole vault, or export the plan as a PNG. There is no server holding your layout — the link is the layout.
What it checks while you build
Every problem is listed in a panel of its own as you go, and each one takes you to the room it is about. Nothing is silently corrected.
- Rooms stay on the grid. No overlap, and nothing runs past the 26 cells of a floor.
- A floor needs a shaft. You can only dig down where an elevator already reaches.
- Every room keeps a route home. Deleting one that would strand the rest from the vault door is refused.
- Merges line up. Like joins like, up to three builds wide, and a merged room is deleted whole unless you split it first.
- Sizes come from the game. Each room's width and population requirement are the real ones.
- S.P.E.C.I.A.L. is shown, not enforced. The stat sits beside each room in the palette; it rules nothing.
Twenty-seven rooms, plus the door
The palette groups them exactly the way the vault reads — each group its own colour, from the elevators down to the seasonal rooms.
INFRA
POWER
FOOD
WATER
LIVING
STORAGE
MEDICAL
TRAINING
CRAFTING
MISC
SEASON
Why plan a vault at all?
In Fallout Shelter a room is easy to build and awkward to undo. Elevators decide which floors you can reach, merged rooms come out whole, and a layout you dug in the first hour is the one you live with at a hundred dwellers.
This planner is the cheap place to make those mistakes. Tear a floor out, try the other arrangement, undo it, and keep the version you liked as a file or a link — before you spend a cap on it.
Questions
- Is this an official tool?
- No. It is an unofficial fan project, not affiliated with, endorsed by, or sponsored by Bethesda Softworks.
- Do I need an account?
- No. There is nothing to sign up for, and no server that keeps your vault. The editing happens in your browser, and a layout only ever exists in a file you save and in the URL you share.
- Where do the room facts come from?
- Sizes, S.P.E.C.I.A.L. stats and unlock requirements are taken from the Fallout Wiki. No artwork from the game is used — every glyph here is drawn from plain shapes.