Those are just duplicates, they will probably get sold eventually. A really fun game that I like is Space Station Silicon Valley. Fun fact, there is a bug in the game that makes it where you can't pick up a specific item so you can't 100% the game. I believe that there were carts released with a fix but it's not really talked about so I'm not sure. Anyway, there is a patch for the ROM that fixes the bug so I suggest playing that if you can if plan to 100% the game.