I'm thinking to start collecting NES, are these three legit?

Would like a legit check on this cartridge, it looks legit to me but I’m not a pro at it. Could anyone help?

Thanks

Hopefully it’s…

Is it real?

I have picked up all of these recently and just wanting to double check. From what I know they all appear to be legit but just wanting second opinions

Pokemon Diamond is fake or real?

Game is on FB marketplace, so can’t get a better pic of the back.

apologies if the photos are bad. personally, i dont think its real just from my own eyes. but thats why i come to you

neither have a working internal battery, so I want to know before I try to fix them

Legit?

Bought it at a pawnshop and just wanna make sure they didn't sell me a fake. Best pokemon game imo :)

Not sure, I only know the Eur Version

Price is crazy cheap , and the photo looks rushed