
GatoCat World Maker is a lightweight fantasy map creation tool that lets you quickly generate and edit procedural worlds. Designed for worldbuilders, writers, and game designers who want a fast, visual way to develop and organize their settings.

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GatoCat World Maker is a lightweight fantasy map creation tool that lets you quickly generate and edit procedural worlds. Paint biomes, countries, religions, cultures, rivers, roads, mountains, and settlements directly onto a grid map, then annotate your world with labels and notes. Designed for worldbuilders, writers, and game designers who want a fast, visual way to develop and organize their story settings.
Use different brushes to paint mountains, roads, nations, religions, cultures, and a variety of other biomes.
Place cities and villages, labels, and notes.
GatoCat World Maker comes with two pre-built worlds for you to explore and get an idea of what the tool can be used for.
Mouse
Left Click – Paint terrain, place objects, or interact with tools
Left Drag – Paint continuously or draw roads/rivers
Right Click – Inspect tile / open notes
Scroll Wheel – Zoom map (or resize selected label)
Left Drag on Label – Move label
Right Drag on Label – Rotate label
Keyboard
1–5 – Biome / Nation / Religion / Culture / Alliance tools
6 – Place city
7 – Place village
8 – Road tool
9 – River tool
0 – Inspect mode
M – Mountain tool
L – Label tool
E – Erase tool
+ / - – Adjust brush size
Ctrl + S – Save world
Ctrl + O – Load world
G – Generate new world
C – Cycle map view modes
Delete / Backspace – Remove selected label