Just submitted my pyweek game called Kaos. I also made a game for Ludumdare two weeks or so ago but instead of finishing that decided to do the pyweek first. I really wanted to try my hands at HTML5 - but I refuse to use Javascript. So I took this pyweek as a chance to play with pyjs.
The game's page on the pyweek site is here:
The game can be played here (only in Firefox/Chrome and only with a fast CPU):
While it is really slow and quite restricted for now, I like what I'm seeing from pyjs regardless. A 100% Python3 game, running in my web browser.
A screenshot: