1. There is no "main game", but Minecraft and TF2 indeed often are in the headlines. There's an entire subforum dedicated to Minecraft, whereas the subforum
Supported Games includes subfora for TF2, RO2: Rising Storm and Other Games (the third down in
http://forum.specialattack.net/index.php). Lately we've been banging Garry's Mod in a group of many every other evening.
2. As a non-RO2 player myself I can't answer that, but people seem pretty stoked about it whenever they talk about it.
3. We aren't really focused on any game, it's just that some of us play A, others play B, some play C and so on. We're a gaming community, not a [specific game insert goes here] community.
4. :< (see 2.)
5/6/7. For some games, yes. In Minecraft you get a [$] tag, which should grow your virtual penis. Not sure if donators have anything special, huehuehue. SpA points in TF2 can get you something; not sure what, but I recall it being about a reserved slot and spray permission. RO2? Not a damn clue.
      However, you shouldn't donate
just to get perks. We also don't believe in Pay-2-Win politics. Donate if you like to hang around with us and want to support us