There is the WMS 550 Video Slot series with some of the following games:
Alfred Hitchcock Aztec Adventure Best Things in Life MD Big Tippers Bottom Line Cash Crop Crocodile Cash Filthy Rich Hollywood Squares Hot Toppings Instant Winner Jackpot Party Jackpot Stampede Leprechaun's Gold Life of Luxury Love to Win Money Groove Money to Burn Monopoly Free Parking Monopoly Hot Properties Monopoly Money Grab Monopoly Money Line Monopoly Party Train Multiplay Poker Set A Multiplay Poker Set B Off the Charts Pacman Perfect Game Reel Em In Reel Em In-Casting for Cash Roll Credits Something for Nothing Swingin In The Green Toast of The Town Top Banana Who Dunnit Wild Streak Winning Bid X Marks The Spot Yukon Gold
I started looking into creating a driver for this but just got too busy.
Many of these games are quite fun. I have access to some dumps if someone works on it. (And the service manual).