Boulder Dash V was possibly
the second Boulder Dash-
It was made by Don Pedro
of the "Zombie Crackers".
Don Pedro used the first crack-version from Chris Grey,
added the caves of his group and a little intro (as shown
on the piccy below). After pressing space-bar a little rocket
is landing and Rockford comes out and stares at the player.
It's possibly a little "Tribute" to the Space-Charset.