Flexible level editor
It's a Doom editor
Map editor for pokeemerald, pokefirered, and pokeruby
A map and tileset editor for pokecrystal, pokered, and projects based on them. Written in C++ with FLTK.
Open source toolkit for Mafia games. (Mafia II, Mafia III, Mafia DE)
Online collaborative map editor for role-playing games.
Map editor for C&C: Red Alert 2, C&C: Tiberian Sun and Dawn of the Tiberium Age.
2D platformer engine using LÖVE and Lua
Tile / Sprite / Map Editor
A fully modern map editor for GTA III, GTA: Vice City, and GTA: San Andreas
Main repository for VALHALLA, the first-person shooter game set within a dystopian, sci-fi reimagining of Norse mythology.
Qt based tool for editing maps generated by ROS gmapping package.
XYZ Maps is an open-source map editor written in TypeScript.
A 2D game engine focused on open-world platformer games, built with C#
MapDraw is a simple, powerful web-based editor for creating, viewing, and managing geographic data like paths, areas, and markers. Built with Leaflet.js, it supports interactive drawing, file import/export (GeoJSON, GPX, KML, KMZ), routing, elevation profiles, custom styling, Strava activity integration, and OpenStreetMap contributions.
Open source map editor in Unity, for Rust.
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