Bonanza is the last of the Magic Squares games.  Aside from the standard corner mounted squares, there is also a center Magic Line, allowing for some great action - necessary as there are four different colors on the bingo card, corresponding to four true independently moving odds sections.
This game has no extra balls, but has an extended time tree to after 5th, corners scoring for 100 and 200 (at random), and a huge redesign of many of the units inside the head.
This game would be interesting to work on - many units are actually simplified.
A bell will sound as you earn features or odds jumps!
Backglass:

Cabinet:

Playfield:

Internals:
http://bingo.cdyn.com/machines/bally/bonanza/resources/int-bonanza-1.jpg