The problem is casual and hardcore gamers are way too broad of a spectrum to really define. That's why so many subtypes of gamers exist like...
1. The Japanophile
2. The Madden Men
3. Button Mashers
4. Achievers
5. Serial Grinders
6. Nostalgiac
7. Facebooker
8. Peripheraler
9. Nintendoite
10. Pokemon Trainer
11. The War Hero
12. The Perfecter
and more.
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Chrono1219