Got to play with the Japanese PSX prior to the US release, so 3 games stick out for me that sold me on the system.
Tekken, Ridge Racer, Toshinden.
I was talking mad shit back then toward Toshinden though. "Oh, Takara made it? Oh so, they got ideas from those shitty ports of Neo Geo games they did?" Everyone was like "oh shit! EEEEEEEEEEE......" Then when they released it in the US, they dubbed the voices and changed the OST to the arranged soundtrack. I was "So they put the arranged soundtrack cause they knew we were gonna hate the dub voices!"