When did you have the most fun playing MCOC?
We all have our favorite moments. Maybe it was when you finally got that first 4* out of a freemium crystal.... or defeating a boss that had you almost throwing your phone against the wall because it was too hard. One of my favorite time periods was way back when they had that Ultron 5 or 7 day alliance event where you scored points for beating Ultron's drones in arena and big points for finding and defeating Ultron. Something about that event for me helped make something that was extremely tedious (grinding arena) into something fun and helpful for a more collective reason.
So what was it for you?