LÖVE is an awesome 2D game framework for Lua.
Game engine
A hand-crafted 2D game library in Go
Powerful, mature open-source cross-platform game engine for Python and C...
Java / JavaFX / Kotlin Game Library (Engine)
2D skeletal animation runtimes for Spine.
A fast, scalable, distributed game server engine/framework for C++, incl...
A curated list of Game Boy development resources such as tools, docs, em...
Defold is a completely free to use game engine for development of deskto...
:video_game: :game_die: A wonderful list of Game Development resources.
The multiplayer game engine
Terasology - open source voxel world
Rust bindings for Godot 3
Godot Engine official documentation
Node Editor built using Dear ImGui