MassiveMatch is a gigantic playing field where you work alongside other players to match 3 or more tokens to caues them to vanish. The more you can match, the better, and your ranking will increase. You are all working together to defeat a level, so try to set up combos and extra matches for your teammates. There will be so many players affecting the board that you must work fast!
Click an item and click an item next to it to switch them. This will only work if they will create a line of 3+, then they will vanish.
If you want more chaos, work toward the top of the map. If you want a smoother experience, work toward the bottom where the tiles will be moving less.