A game framework written with osu! in mind.
Eva.js is a front-end game engine for creating interactive projects
Game engine supporting many 3D/2D formats and graphic effects
Go 3D Game Engine
RPG dice roll simulator for vintage Tandy TRS-80 100/102/200 laptops
Planimeter Game Engine 2D - LÖVE-based game engine for Lua
Mahasona engine is an open source game engine.
Game engine supporting many 3D/2D formats and graphic effects