A freeware game creation system for classic 2D action games. No programming skills required; everything is made in a "construction kit" fashion. Achieve amazing results with minimal effort: Pre-defined "industry standard" game object categories and behaviour models with hundreds of attributes, all of which you can change. Create arcade quality games with just a few mouse clicks. Easy, fast and free.
A small map making concept for a possible platformer game. Graphics shown here are CC0 creative commons that I found from Opengameart.org.