PuzzleScript is a free, open-source game engine specifically designed for creating grid-based puzzle games. It uses a simple scripting language that allows developers to quickly create pixel-style puzzle games. The tool runs entirely in the browser with no software installation required.
JigsawPlanet is a free online jigsaw puzzle platform where users can create puzzles from their own images or solve puzzles created by others. With customizable difficulty levels and piece counts, it combines entertainment with social interaction in a casual gaming environment.