Prop hunt ps4

I seem to have forgotten what cod game and how to access this party game. Myself and my child used to play this on our ps5 but haven't played for a while now. Anyway we now only have a ps4 ( long story) can anyone help with what cod game we need please? We have the black ops cold war but cannot find any party game options at all. Is it this or mw2? Thanks in advance.