When the level is complete, the voice will announce, "Sugar Crush!" and the same words appear on the screen. The sugar crush is a reward and a way to get extra points for every move you have remaining when the level is complete.
Normally what happens is that after the Sugar Crush is announced, all the special candies at the top left on the screen automatically activate. They then work their way to the right and down. The special candies go off in this order: candy fish, wrapped candies, striped candies, color bombs and coloring candies. All these are done in reading order from left to right and top row to bottom row. Any new special candies formed during cascade will change the sequence. Some of the special candies will be converted during the process.
Sugar Crush has three phrases:
If there are special candies on the board, they will be activated.
When was added to the board, all kinds of special candy will be activated in order: candy fish, wrapped candy and striped candy.
Note that as Sugar Crush progresses, extra candy colors may be added onto the board. This is likely to prevent excessively long cascades from occurring especially on wide-open four-color levels, which tend to result in very high score variation.
The order when special candies are added on the board is: wrapped candy appears in the first move, striped candies appears in four next moves and candy fish appears in the sixth move. After completing adding, they will be repeated until out of remaining moves.