Six balls:

Press [F1] at the options menu for any table.

Cheat mode:

Enter one of the following codes to activate the corresponding cheat function.

Effect Code

Extra bAll on table [Esc] + B + N
Display sound and graphics level [Esc] + [F9] + N
Display border [Esc] + [F9]
Screen capture to "screen.pcx" [Esc] + [F10]
Control two bAlls [Esc] + B + J
Nudge the table [Space]
Nudge table left Z
Nudge table right /
Lock right flipper X
Lock right flipper >