A modular Common Lisp game engine
Open source Old School RuneScape client
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Java/JavaFX/Kotlin Game Library (Engine)
Make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons
A bridge/proxy allowing you to connect to Minecraft
A refreshingly simple data-driven game engine built in Rust
Gideros Release version
A tech mod for Minecraft themed around the magic of nature
Flexible level editor
Europa Universalis 4 save game editor
Robocode is a programming tank game for Java
A sharp, readable, vector-y version of Monocraft
Mech Station Beta - Tower Defense like Game
Arianne is an engine to develop multiplayer online games like Stendhal
Stream low latency video from your desktop or webcam over TCP/IP
Java RTS framework
A free 3d game for PC that does not limit the player. Fight,Build,Gain
X3D is the open-standard format for 3D graphics scenes on the Web.
Galgame's Multilingual Real-time Machine Translation Tool
Vivid is a modern C++ 3D engine using OpenGL4+