As it requires a genuine CGA card, it didn't work on modern PCs.
In 1998, I created Digger Remastered, which runs on all PCs with CGA or better and plays just like the original.
It also has many new features, including:
- Exit button
- Optional VGA graphics
- Recording and playback
- Real time speed control
- Keyboard redefinition
- Gauntlet mode
- Two player simultaneous mode