Completely agree. I got lost on the powerscaling, feats, reveals etc hype trains but OP has fucking amazing world building, exploration, charm, sense of adventure etc.
I was thinking about the structures of Dressrosa, Zou, FMI, PH, WCI, Wano and ofc pre TS places like Skypeia, Jaya, Baratie, Sabaody and Reverse Mountain and they are incredible.
These are very underrated aspects of OP imo.
In the OP games, the part I enjoyed most was running around the OP locations and experiencing them more directly. Recognising famous areas and landmarks.
Pirate Warriors 3 and 4 does this quite nicely too imo.
It reminds me of how much I really loved the Wind Waker Zelda game as well as Zelda games in general, 3D Mario games especially 64 and Sunshine, Golden Sun, Basten Kaitos, Tales of Symphonia and Skies of Arcadia.
Also series like Asterix and Obelix, Samurai Jack, Johnny Quest, Tintin maybe etc.
I've been getting into Avatar TLA lately and it reminds me of Naruto and OP a lot, especially OP maybe.