The Digger Remastered Java port is by Marek Futrega / MAF.
The keys are as the default Digger keys - arrow keys to move, F1 to fire. Press F9 (not F10 as in other versions) to abandon a game in progress and return to the title screen. Press + or - to change speed, and Esc on the main menu to switch between 1 and 2 player mode. Click on the Java applet to give it focus if it does not respond.
Sound and many of the "Remastered" features such as VGA graphics, keyboard redefinition, gauntlet mode, 2-player simultaneous mode and recording have not yet been implemented.