Dr Ocelot

I will mention that the btb_break sound plays after a level up even though there is no B2B chain.

Unfortunately, this is because the key binds generally used in browser games are dependent on a key's physical location, and we can't really just "get" the layout easily across browsers...

I'm sorry, I don't quite understand exactly what you mean. Are you saying the game isn't responding to any inputs from your keyboard? I'm unsure of what you mean by...

Would you mind providing more information on exactly what notification you're talking about? Is this a notification within the game or outside, and what is the notification for?