Thanks for the link! Sorry for the problem, now that I'm aware of this it'll be okay next time. You can resubmit the barcode, if you want to.
I think I see what you mean now, however games are not linked together, even if they share a part or totality of their name. They are each treated as individual and different items, which is actually what they are. Each different entry has most likely a different barcode and game number. Though they usually would share the same developer and publisher, it's otherwise too inconsistent to be automated.