I tested out Java last time and it was a disaster. Not a friendly language for quick results.

So, now I try HTML5, I'm in the process of sharpening my webdev skillset and I just can't resist Ludum Dare.

Any recommendations for a HTML5 game engine to use? I've looked into some of the free ones but I'd like to get some feedback from people who have used them before I take the dive into the docs.