Have to get the locals to answer I think.
I remember going to Ostende/Gent/Bruges a few years back and seeing these flipperless ones in loads of bars, just pull the plunger and the ball falls in a hole and you can win money, much like the really old pre-flipper machines.
Found an Iron Man in a bar and TAF/ACDC Prem/TSPP in an arcade in Ostende but not sure about Brussels.
If you are going via DFDS Seaways coming back there used to be 3 pins in the departure lounge at Dunkirk but in a really bad state. Was X-men, Spiderman and an Avatar I think.