Nick on 06 August 2009
The word already has a meaning.... so you can all stop trying to recreate the word.
hard-core:
–adjective
1. unswervingly committed; uncompromising; dedicated
-noun
1. The most dedicated, unfailingly loyal faction of a group or organization: the hard core of the separatist movement.
2. An intractable core or nucleus of a society, especially one that is stubbornly resistant to improvement or change.
Really any game can be played in a hardcore way. I know 2 people that play Solitaire in a way that's more hardcore than what I expect most people on here play their "hardcore" games. They've been playing it every day for years.
Gamers can be hardcore, but games themselves cannot.
Smash Bros: 2363-5325-6342 
