It combines deterministic generation with manual editing, so you can generate a baseline layout from a seed and then adjust rooms, corridors, doors, text labels, and start/end markers directly on the canvas.

Current Features

Deterministic dungeon generation from a master seed
Room generation with configurable:
- room count
- minimum and maximum room size
- square-only rooms
- packed-room mode without corridors
Corridor generation with configurable:
- minimum and maximum corridor width
- corridor randomness
- dead-end room percentage
Automatic door generation with configurable:
- overall frequency
- room/hallway chance
- locked door chance
- secret door chance
- middle-corridor doors toggle
Automatic window generation with configurable:
- enable/disable
- minimum and maximum width
- overall frequency
- room/hallway chance
- internal windows toggle
Generated start/end markers with configurable:
- minimum and maximum size
- minimum and maximum count
- placement inside rooms
- farthest-pair matching between start and end markers
Manual editing tools for:
- rooms
- corridors
- archways
- doors
- locked doors
- secret doors
- text labels
- start markers
- end markers
Export support for:
- .png
- .jpeg
- .webp
- .svg
- composite folder export with masks
Colorblind mode with alternate visual encodings for rooms, corridors, walls, doors, archways, and windows

Tabs

Generate

Controls global generation and export:

grid columns and rows
master seed and random-seed button
reset and clear actions
export format, dimensions, and grid visibility

Layout

Controls room, corridor, door, and window generation behavior.

Changing values in this tab regenerates the dungeon immediately.

Start & End

Controls generated start/end marker behavior:

minimum and maximum start marker size
minimum and maximum end marker size
minimum and maximum start marker count
minimum and maximum end marker count

Changing values in this tab regenerates the dungeon immediately.

Generated markers are placed inside rooms. Matching start/end indices are paired to rooms that are as far apart as possible.

Add

Contains manual placement tools for editing the current layout without regenerating it.

Canvas Interaction

Left click and drag a room to move it
Left click and drag a start/end marker to move it
Right click and drag a room to resize it
Right click without dragging to cancel an active add tool
Delete or Backspace removes the currently hovered room, corridor, door, text label, or marker
Ctrl+Z undoes
Ctrl+Y redoes

Start / End Markers

The app currently supports two marker workflows:

Generated markers:
- created automatically during dungeon generation
- always placed inside rooms
- sized from the configured min/max ranges
- paired by distance for each matching start/end index
Manual markers:
- added from the Add tab
- use the configured minimum size for their marker type
- can be repositioned by dragging on the canvas

Folder Export Masks

Folder export writes a composite image plus separate masks for:

floors
walls
doors
archways
locked doors
secret doors
windows
start markers
end markers
grid, when enabled

Build and Run Yourself

git clone https://codeberg.org/Grimsace/desktop_dungeon_generator.git
cargo run

Notes

Settings are persisted between runs using the local OS application data directory.
The app is still pre-release and the file layout and feature set may continue to change.