I get the cop on the left and "squares" in the tab. While a cute idea it is not all that interesting as it sits in a single tab with Firefox. So the whole display is very tight as I have eight tabs.
Then there is the whole, just spam spacebar for the win.
What version of Opera and Chrome? Opera 12.01 and Chrome 21 work - this is what you should see in your title bar: http://o25.img-up.net/screen1239.png
In Chrome 18, Opera 12.01 and Firefox 16 I also only get boxes. All on Ubuntu 12.04.
I have chrome 21 and I just see squares
edit: On windows 7 64 bit
Chrome 21, Windows 7. Only see squares.
it's all (unicode) boxes, no graphics.
chrome 21.0.1180.79 + ff 14.0.1 on mac os x
I use chrome 21.0.1180.79 on mac os x, and it works fine here.
Firefox 14, Linux. I see only squares.
In Chrome 21 (Win7-64) I only see squares moving in title bar
In FF14 (Win7-64) the characters show, but are black.
I think it's because the author uses apple icons, so it doesn't render at all on windows machines.
Yep just squares here for a few seconds and then game over (Chrome 21.0.1180.79 on Win7 x64)
Doesn't work for me either in Aurora (Firefox 16) or Chrome 21 beta (on Windows 7).