An Open Source DOS emulator to run old DOS games
A free/open source client and automation tool for Ragnarok Online
A free and open-source Touhou Project fangame
Homebrew development library for Nintendo 3DS/Horizon OS user mode
Create custom themes for the Nintendo Switch
Xash3D FWGS engine
A completely free, open-source, 2D game engine
Gideros Release version
RTS game with the theme of Strategy by Design
General Purpose Engine for Graphic Adventures.
LDraw™ editor for LEGO® style digital building instructions.
A modern, cross-platform Quake game engine based on FitzQuake.
A cross-platform port of Hexen II game.
0 A.D. is a free, open-source, cross-platform real-time strategy game.
A MUD client for Android, iOS, Linux, Mac OS X and Windows
INSTEAD - Simple Text Adventure Interpreter.
Cross-platform real-time strategy game (3D)