Voxel Verse is a free visual editor and publisher.
Features
Rapid loading and editing in the web browser on desktop and mobile
No previous experience necessary
Simple to change the sound, music, images, and gameplay
Sandboxed javascript
Why should you use/play it?
Play it because it is fun to play. Make games in it because it is fun to make games in, you want to build a portfolio, or you want to quickly see how other people like your game ideas.