Topic: 2d

Desktop/Android/HTML5/iOS Java game development framework

A super simple Unity 2D framework

A Common Lisp framework for the creation of electronic art, visual design, game prototyping, game making, computer graphics, exploration of human-computer interaction, and more.

A curated list of awesome PICO-8 resources, carts, tools and more

2D liquid simulation in WebGL

C++ implementation of Lie Groups using Eigen.

Network protocol for real-time sharing between graphical applications

Math.NET Spatial

Graphics32 is a graphics library for Delphi and Lazarus. Optimized for 32-bit pixel formats, it provides fast operations with pixels and graphic primitives. In most cases Graphics32 considerably outperforms the standard TBitmap/TCanvas methods.

Cage (Ain't a Game Engine) - write 2D games using plain C

A textual Multi-User Dungeon server in Haskell.

2D Game Engine with Lua Scripting made on the top of SFML !