It's a popular tower defense gacha , and toei is making a similar game. Looks dated to say the most positive.

Riders being stationary turrets isnt what I want from a Kamen rider game, though.

A gacha is a game that has some sort of RNG that's one of the main spectacles and incentive to monetize. Kamen rider has had several of these games

Granted, these were almost all exclusively in Japan and barely lasted 3 years so I can't blame you for being unaware, but they were def there

The concept of some of my my all time favorite rangers being my all time least favorite color...

And Im dead serious too