[Kurona]

I think the big reason for W and OOO really is... just that their gimmicks fit extremely well into a video game! Both of them revolve around alternate forms with very specific powers that don't get completely overshadowed by upgrades and saw a lot of iconic use in their series; and even compared to other Riders who place heavy emphasis on that like Kuuga and Den-O, W and OOO also mix and match a lot.

Right away on day 1 we've seen a form-change wheel for W that has not just his three main forms, but all 9 of his form swaps; implying that we'll see a lot of variation on the same sorts of powers and moves in an interesting way. We admittedly haven't seen anything similar for OOO yet and with his sheer amount of combos I imagine it'll just be relegated to his main non-mismatched combos (with perhaps Tajador requiring more Rider Power to be built up or something), but I imagine they could have just seen more potential in him for what sort of game they were making.

Even aside from gameplay, there's a couple other factors: as already mentioned, the two are the most heavily connected to Foundation X storylines, who from the background mooks appear to at least play a large role in this game's story. Not to mention... the two are absurdly popular. W needs no introduction but while OOO is no Den-O, he still makes a lot of bank -- until Zi-O I believe he had the best-selling toyline, and when merch is made of Kamen Rider he's one of the first to get in there and his lines tend to sell extremely well to the point of eventually going all out. So-Do Chronicle was very quick to get to him after their W and Den-O lines and he was so popular they ended up making sets of the Movie forms and Birth; while apparently Tamashii placed so much faith in his Seihou SHF success that they're making all his main combos, integrating a complex combo change gimmick, making human figures and putting out re-issues. He's maybe not the first you think of but I'd argue he ranks in at least the top 5 most popular Heisei Riders, at least where profits are concerned.


They do look odd at first but I think just a combination of popularity, gameplay potential and then easy connections between the two does make them a natural choice. They do look odd in lieu of Kuuga and Ichigou (and I will say it's going to look even odder when this game's going to be released when Saber will have been airing for at least a month), but there certainly seems to be very good reasons for it.


... or, uh, you could go by this officially stated reason which I'm having a lot of trouble deciphering. I guess Aruto just got REALLY inspired by what he saw of them in Grand Zi-O's summons or something!