Jump Force if it actually had some sort of character but even more busted gameplay. Saitama being able to defeat anybody in one punch just like the show is a cute novelty on paper but in practice he's still hideously broken despite the attempt to balance him by having him join the fight late. Even outside of that, some characters are very clearly more powerful than others, and randomized events that further disrupt the battle are such a bizarre inclusion. The RPG elements don't do a whole lot to keep the base gameplay loop from getting stale quickly, you'd have to be a diehard OPM fan to find any enjoyment out of this.