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.
Online collaborative map editor for role-playing games.
Open source toolkit for Mafia games. (Mafia II, Mafia III, Mafia DE)
2D platformer engine using LÖVE and Lua
Tile / Sprite / Map Editor
A BYOND language smartness provider, map renderer, and more.
Map editor for C&C: Red Alert 2, C&C: Tiberian Sun and Dawn of the Tiberium Age.
XYZ Maps is an open-source map editor written in TypeScript.
A DOOM and Duke Nukem 3D style game with ray-casting, featuring a level editor and multiplayer from scratch in C
Qt based tool for editing maps generated by ROS gmapping package.
Open source map editor in Unity, for Rust.
Kirby's Dream Course / Kirby Bowl level editor (C++ / Qt)
N-Space: a mobile app for building 3D interactive worlds
Main repository for Valhalla, a first-person shooter game project inspired by old school and modern titles.
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