Why don't my GBA Pokemon games work?

I bought these 16 pokemon games from iOffer.com and when I got them, all of them freeze at a certain point of time, (freezes in 5 min). Are they fake or real? Thanks for the help.

Those are faux and illegal copies of the games. You already asked a similar question here, and this isn't the section to talk about this. This section is only for questions pertaining to the PokéCommunity forums.

Because you posted your thread in Community Questions & Feedback.

Here's a useful link.