The Game Center offers unblocked games
Fast and lightweight JavaScript game engine built on WebGL and glTF
GUI for downloading/managing homebrew apps for video game consoles
Custom launcher for Minecraft to easily manage installations
Open source HTML5 game framework that offers WebGL and Canvas
Open source cross-platform multi-purpose game toolkit
Open game and rendering engine packed into a JavaScript framework
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
A retro game engine for Python
Custom launcher to manage multiple installations of Minecraft at once
PufferPanel is an open source game server management panel
Tactical 2D shooter in fishy pixels style. Made with Rust-lang
Free, open source game engine online
The Tiny JavaScript Game Engine That Can!
CTFs as you need them
The game engine for everyone
Java/JavaFX/Kotlin Game Library (Engine)
Engo is an open-source 2D game engine written in Go
Self-hosted CMS platform based on the Laravel PHP Framework
An elegant Go board and SGF editor for a more civilized age
3D game engine/framework in C, with Luajit and Python bindings now
Azuriom is a complete open-source web solution for game servers
A dead simple 2D game library for Go
Embeddable unity game engine view for Flutter
Web application brings custom skins back in offline Minecraft servers