Thank you very much!
For your issue, are you playing on a AZERT keyboard ? If so, you can play with ZQSD, the game is made to be AZERTY and QWERTY compatible.
I am using a QWERTY keyboard, the issue only happens when I press CTRL to go down and W to go forward at the same time, it closes my browser lol. But it doesn't happen when I play the downloadable version, I did check that just now.
