Calico
a web engine for interactive fiction
Ren'Py Mirror
The visual novel engine
Bapalon
A virtual museum tool that anyone can edit!
OHRRPGCE
Official Hamster Republic Role Playing Game Construction Engine
Cave Engine
An easy 3D desktop Game Engine scriptable in Python.
Whimtale game engine
Make interactive stories and games with this simple tool
Rpg Tools
RPG engine and a Character Editor / Level Editor
plano
flatgame maker
Super Videotome
micro narrative engine
Arcade Game Designer
Create your own ZX Spectrum or Amstrad CPC games
text-engine
A JavaScript text adventure game engine
VCS Game Maker
Create Atari 2600 programs with no coding knowledge.
RenJS
HTML5 Visual Novel creation made easy and free
AppGameKit Studio
AppGameKit Studio is a fully featured game development tool set.
Defold
The game engine for high-performance cross-platform games
bipsi
a tool for making small stories and worlds
Lumix Engine
Open Source 3D Game Engine
Yahaha Horror Gamekit
Free no-code 3D horror gamekit
GridlessDB
Create databases for games. Without spreadsheets.
Tilengine
2D retro grapics engine with true raster effects for creating 8/16 bit style games
Bitsy Color +
Like the bitsy game editor but wish you could just use all the colors, well...
Arcade Game Studio
Arcade Game Studio is a FREEWARE program for making games with the style and gameplay of the 80's arcade games.
SEEVN 2 – Visual Novel Maker & Player
Make your own VN, dating sim, quiz game without coding, share it and play!
ANTIRUINS Engine
a Lua engine for the Sega Dreamcast and PC