While none of them are as popular as Nintendo's main series, Sony does have rather a lot of notable exclusive IP. LittleBigPlanet, Bloodborne, Uncharted, Ratchet & Clank, Horizon: Zero Dawn, God of War, The Last of Us, Gravity Rush, PaRappa the Rapper, etc.

Halo is popular, but Sony has a much larger portfolio of exclusive IP than Microsoft does right now.