Ballerina was an interesting experiment in bingo history.
A Magic Screen game with positions up to 'H' (the last with this feature), the game gets really interesting when you have the ability to increase the Magic Screen feature awarded by hitting rollovers on the playfield, and the ability to reverse the top row of holes (ex: 1 becomes 7 and 7 becomes 1).
Beautiful artwork (another curtain!), and interesting gameplay make this game very unique.