ImpactJS vs MelonJS

ImpactJS has an active user community that busily produces tremendous resources including videos, books, tutorials, walkthroughs and more. There are also comprehensive class documentation available.

Impact provides 2 types of collision detection; static and dynamic collisions. Both of which are easily integrated into game development.

Many plugins are available, including one called Impact++ which adds features like pathfinding and dynamic lighting.

Built-in map editor with support for tiling, collision layers, and actors.

Works with Box2d physics library, comes with all worthwhile elements for actors built in.

Extending the reach of a game developed with ImpactJS is easy due to the cross-platform nature the framework. There are Considerations around performance, resolution and audio, however all can be appropriately addressed when in development. Works in the browser via Canvas, even on mobile. Easily translatable into a packaged app.

Devs help resolve issues in a timely manner and are friendly throughout the process.

Natively integrates Tiled map editor. Tiled is a free, open-source map editor that supports orthogonal, isometric and staggered maps.

The documentation is intuitively structured and comprehensive allowing you to quickly find information about the engine.

To understand basics of MelonJS, the developers maintain 2 tutorials that are available on the site.