[wazoox]

Same for me (Firefox 27.1, Ubuntu 12.04). The game loads, then nothing at all happen. Doesn't react to clicks, keyboard, anything. Some game complains when out of focus, I click on the canvas, then nothing.

[davidgaleano]

What games did you try? Do you get any errors on the JavaScript console?

[wazoox]

Sorry for the late reply, I've tried a couple of games with similar results, but POlycraft works at least.