Where are there werewolves in Okami and Zelda? Okami is a wolf and Link turns into a wolf. You're also basing Sonic off of one promotional picture leaked onto the internet. I'd hate to break this to you but both wolves and werewolves have been in videogames before believe it or not. Plus Twilight Princess and Okami shared the same developmental years, meaning neither was copying, it just worked out that way.
The light and dark worlds thing has been going on forever in gaming. Metroid Prime 2 was actually inspired by the changing of worlds in A Link to the Past says the Retro guys in an interview. Many games have used this feature throughout many generations. Remember a little title called Legacy of Kain Soul Reaver for the PSOne? Yeah it used the same concept. It didn't make the game feel any less original.
As far as shooters you have a point but the most dominating genres always contain the least creativity it seems because of oversaturation. Back in the days platformers were getting oversaturated and felt not too original at all. The same can probably be said for RPGs in the last 90s and early 2000s. It's just the way things are.








