Mr. DO! on the 2600 at first glance seems like
it has most of the ingredients from the arcade game. The
graphics and sounds are passable and the basic game seems
to be there. The big flaw in this version is that the
"maze" you dig doesn't allow for the sides to remain,
ruining the game play and making Mr. DO! too hard
to be any fun. You might try to get the E-X-T-R-A letters
once, but other than that you'll probably pull the cartridge
out in frustration.