One of my favorite bingos - Sun Valley - this 1957 beauty has great artwork, and is jam-packed with features.
Magic Squares and a single Magic Line row allow the player to move every number on the backglass.
The challenge is in getting those features lit, along with a time tree that actually allows you to reposition your numbers well, without tilting!
I love everything about Sun Valley - the knocker that goes off as you get awarded features and scores is particularly gratifying.