Godot is a powerful cross-platform game engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Multi-platform 2D and 3D game engine
Cocos simplifies game creation and distribution with Cocos Creator
Xash3D FWGS engine
The game engine for everyone
GemRB is a portable open-source implementation of the Infinity Engine
New Godot bindings for Swift
A dead simple 2D game engine for Go
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
An iOS & tvOS Frontend for Multiple Emulators
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Cross-platform game engine in Rust
Play! - PlayStation2 Emulator
Orx: Portable Game Engine
The open-asset-importer-library repository
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented
Pascal Units for Medical Applications
Everything you need to build and deploy scalable realtime 3D apps
Urho3D Game engine
The AWS GameKit Plugin for Unreal
Free 32/64/16-bit multi-platform Pascal and Object Pascal compiler