2d

Desktop/Android/HTML5/iOS Java game development framework

An open source re-implementation of Diablo 2

A renderer agnostic two-dimensional drawing api for the web.

tsParticles - Easily create highly customizable JavaScript particles effects, confetti explosions and fireworks animations and use them as animated backgrounds for your website. Ready to use components available for React.js, Vue.js (2.x and 3.x), Angular, Svelte, jQuery, Preact, Inferno, Solid, Riot and Web Components.

A lightweight graphic library providing 2d draw for Apache ECharts

A cross platform high-performance graphics system.

2D JavaScript Physics Engine

LibreCAD is a cross-platform 2D CAD program written in C++17. It can read DXF/DWG files and can write DXF/PDF/SVG files. It supports point/line/circle/ellipse/parabola/spline primitives. The user interface is highly customizable, and has dozens of translations.

2D skeletal animation runtimes for Spine.

Game engine

Java / JavaFX / Kotlin Game Library (Engine)

Go Graphics - 2D rendering in Go with a simple API.

A typescript interactive engine, support 2D, 3D, animation, physics, built on WebGL and glTF.

🎮 🎲 A wonderful list of Game Development resources.

zig game engine & graphics toolkit

Modern, lightweight and efficient 2D level editor

Java bindings for Skia

An incredibly fast JavaScript library for Delaunay triangulation of 2D points

Simple Ants simulator

A fast and lightweight 2D game physics library.