Jissen Pachi-Slot Hisshouhou! Hokuto no Ken SE, (I think, there are hundreds of these things,) PS2.

“Divine Bloodlines” (Richter’s Theme) from the Castlevania pachislot game. It’s very good, but I do wonder how the hell you’d hear it over the din of a pachinko parlour…

Vic Viper from Gradius: The Slot.

Gradius: The Slot soundtrrack cover.

Hisshou Pachinko*Pachi-Slot Kouryaku Series DS Vol. 4: Shinseiki Evangelion - Saigo no Mono has one hell of a title and a very cheerful-looking Unit 01 on the front.

Hokuto no Ken / Fist of the North Star Pachislot advert.

SNK Playmore Pachislot Sound Collection.

Jissen Pachi-Slot Hisshouhou! Ultraman Club ST.

Jissen Pachi-Slot Hisshouhou: Hokuto no Ken.
In the post-apocalyptic world of Fist of the North Star, even pachinko is desperate and bloody struggle for survival.

Castlevania Pachislot soundtrack.