Sorry, that thinking is too narrow to me. Many of these games NEVER fall out of fashion. I see people get highly addicted to them. In that vein are standards like Yahtzee, Sudoku, etc. I even include Dicewars in that category, as well as some gambling games. Also, some Flash games do support internet-based multiplay.
Anyway, the plan is that Maemo 5 apps are supposed to be able to assume ubiquitous access. Users who don't have a reasonably ubiquitous internet capability, whether cellular, WiFi, or whatever, are going to be something of second-class citizens. Or at least that's what I understand from reports of Summit attendees.