2d Game Engine

Apress

Building a 2D Game Physics Engine: Using HTML5 and JavaScript (English Edition)

Apress

Build Your Own 2D Game Engine and Create Great Web Games: Using HTML5, JavaScript, and WebGL2

Independently published

2D Game Development Using Unity Engine          

Apress

Build your own 2D Game Engine and Create Great Web Games: Using HTML5, JavaScript, and WebGL

Building a 2D Game Engine in C# (English Edition)

Apress

Introduction to Video Game Engine Development: Learn to Design, Implement, and Use a Cross-Platform 2D Game Engine

Geeks-Line

The PC Engine / TurboGrafx & PC-FX Anthology    

Independently published

C++ for 2D Game Development: A Practical Guide to Creating Games with C++ and Popular Game Engines, such as Unity and Unreal Engine

Solar2D A thorough introduction to 2D game programming starting from the basics of the engine (Japanese Edition)

Defold A thorough introduction to 2D game programming starting from the basics of the engine (Japanese Edition)