1. Play Modifiers (These modify how you play your cards)
2. Protection (Doctors, Bodyguard etc)
3. Roleblockers/Redirectors (pretty self-explanatory...)
4. Investigative (Watcher, Tracker, etc)
5. Kills (Mafia and/or Vigilante/Serial Killer)
6. Discarders (Attack other player's hands)
7. Inspection (Cops, Hand Glancers, etc)
ok, only ones I didn't cover are play modifiers, use your judgement on those and discarders. I'm not sure we should be using those tonight.
Also, if the person to my right could indicate to me some how, subtly, breadcrumb-style, which of these 7 types of cards they plan to play tonight, perhaps in their next post, that would be a little bit helpful to me. Purely optional, of course.