MetalJesusRocks lists some wacky, weird pinball games.
Pinball simulations only, so no physical games here. Also, “wacky” means forget realism. So forget about the Pro Pinball series, which would normally compete for the top of any pinball videogaming list.
They missed these two games though. 3D Ultra Pinball was a pretty strange series. Thrillride was actually based on Hershey Park in Pennsylvania. I’m sure there are others, but these two are near the top of my list of good, weird pinball games.
Fun With Bonus is the home of the semi-coherent, misguided ramblings of professional and amateur pinball players.