Friend of mine had the same issue trying to play it on Chrome. It worked when he used a different browser.
There are other browsers than Chrome? That worked, thanks!
On the topic of the game however. It could use a lot more polish, it takes a while to get your character to start moving, and I managed to soft-lock myself by moving the 1st crate off screen.
There is potential for a great game here, it just needs some work.