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Number 4 sounds interesting. What kind of games did you picture?
All sorts of games.
Like Secret word if anyone in the subject list says a certain word or phrase they get randomly changed but if they make some one else say the secret word they will change back to normal unless they said it again and their own changes become retroactive.
Alteration Memory where the piece creates sets of cards that contain changes when you get a match you can make the change on the card to yourself or someone else.
We could even have contain the game show Bet Your Brain or Dumb Sluts inside it, except instead of the Announcer Akuhime could be the vindictive host.
Hell there are out right sex matches and death matches.
The possibilities are kind of endless because I was considering a make a game option.