maps is a simple Spigot plugin and api for creating clientside maps and map screens.

An easy and lightweight 2d engine for every use of game creation.

PIE-Core is a fast physics 2D engine library on Java.

Game engine - the Files Engine. A tool for creating 2D games.

PIE-Demo is a sandbox and demonstration of PIE-Core usage.

A platformer engine written in Java's Swing framework. It is primarily designed for narrative-based 2D sidescrollers, featuring drag-and-drop world building, and a flowchart logic builder to manipulate objects in the game.