whenever we press 1 Key (start game)the timer should starts with (MM/SS)Time countdown and then it should be exit after that particular time.On screen display "OSD" while playing a game will be a terrific job.
One thing I would like to point out is, To Continue a game just 10 sec before Timer stop,a messege could appear "Press start to continue".
You can assume it as a Fake Continue.
Nothing else.

Btw,MameWah should also be declare as best user friendly frontend.