I agree with Pinske. I experienced the same problems... And also. I've made it to the boss. But if I quit to play another time. I have to beat the level before it, all over again. Which is very detering...
I think you should start putting Quality Controls in your games. As far as I can tell, not many, if any at all, have them. Not everyone has a good computer. and the chat alone could cause lag, and difficulties.
 "A Knight's Story 2"){kind=icon}
 "Scriball"){kind=icon}
 "Meeblings"){kind=icon}
 "Jelly Blocks"){kind=icon}