Probably the best designed game on Google Plus right now is Funzio’s Crime City at Google Plus
Funzio which has Zynga alumni http://www.funzio.com/games/ creates a mix of the best games in social game history Farmville and Mafia Wars (with some ideas from the classic Dope Wars) to make https://plus.google.com/u/0/games/865772480172
CRIME CITY
Zynga better hurry up with Farmville on this new G+ platform and the new platform needs to sort some teeny quality issues (which I shall elaborate later)
DECISION STATS 
G+ have messed up this game. No chop shops, regular session expiries, regular 0 health opponents, and now no one can send anyone stamina or energy or join mobs or gamgs!