Horizon, God of War, Death Stranding, and Uncharted soon,Isn't Valve aiming for 100% compatibility? That's like all PC games. Better than every library :O
Honestly I think in the first year Steam Deck will have a better PlayStation library than the entire Vita got (quality wise).
with all this PC porting maybe sony should open their own PC store...If they can figure it out, they will.