In regards to comments about slow and plodding gameplay...
Myself and many others like the stop and go gameplay combined with some flow. Many new games are so focused on flow that they lose out on interesting and unique gameplay due to a lack of toys on the playfield as well as interesting modes. Most pins also only have one area where modes are accessed / targeted, with WOZ there's several. The crystal ball area has 4 unique modes which are all 2 ball multiballs, the Munckin mini playfield has 4 modes including a multiball, the upper left mini playfield allows players to play a 2-4 multiball with risk / reward playing heavily into locking more balls for Rescue Multiball. Then there's Haunted Multiball which is unlocked after collecting the 3 Haunted Modes. There's also Fireball Frenzy after defeating 3 witch hurry ups which focuses on the witch area and other shots throughout the playfield. Can't forget about Emerald City multiball either which is a great objective based multiball. Then there's two games wizard modes. I can only speak about Battle the Wicked Witch as I haven't reached Somewhere Over the Rainbow but it requires the player to access nearly all of the areas and shots on the playfield. Besides all of the game standard modes there's also two mini outlane games.
Overall playing WOZ gives me that feeling like I'm on a quest while playing it where as when I play my ACDC I just feel like I'm going for points. There are times during WOZ games where I could care less about my score as I'm more excited about how many modes I can unlock and how far I can get in them. I can't think of any other game that provides that type of fun factor other than LOTR.
The modes in WOZ, like most modes in Keith games, provide a unique type of gameplay compared to other pins too. Where most games have players targeting one area during a multiball Keith makes the player work the entire playfield and that to me beats high flow any day and bashing one area / toy again and again.
WOZ is a masterpiece in my opinion and its ruleset makes all of the games toys and features shine.