Is there a way to hide the top "monitor" of the play choice 10 games? to get a bigger game screen?
I am curious of this as well?
For Playchoice games you can always use MameFX or Mame32Fx build of mame. It has some nice features such as which screen to use in a game. Remember Playchoice machines had 2 screens, one for the game and one for the menu (including the time counter). To use this feature, hit tab to enter the configuration menu, select the "Video Options" and then select the desired video mode:
Screen 0 is the game screen
Screen 1 is the menu screen
Dual Under-Over (menu screen on top, game screen on buttom: the default)
Dual Side (menu screen on the left, game screen on the left)
The only problem with using just the screen 0 is that you can't se the counter, which means the when the counter hits 0 it's Game Over.
Hope this help.
Cheers,

Congui