I'm on mobile now right now and can't really test, but one thing that a lot of versions of this game gets wrong is that they omit the feature to be able to dig

I'm on mobile now right now and can't really test, but one thing that a lot of versions of this game gets wrong is that they omit the feature to be able to dig without moving. On the C64 this is done by pressing the button while moving in a direction. I think a lot of people simply didn't know you could do this, which made it pretty much impossible to complete certain levels.