The different level types bring different "Sugar Crush" effects at the end.
Moves - there is no real "Sugar Crush" effect here, except unactivated special candies being activated.
Jelly - for every move remaining, three jelly fish come on the screen and start eating the candies at random, giving you more points.
Ingredients/Candy Order - both levels have the same effect. For every move remaining, a candy at random will become a striped candy, giving an extra 3000 points for every striped candy. Then they all activate.
Timed - any +5 candies left on the screen will turn into the exploding wrapped candy and activate itself. After an update, this only happens on the mobile version.
The Dreamworld is a new world separate from the main game that contains levels 1 to 395. They are exact replicas of the original levels except with more blocker introduced earlier and are more common on the board.
Level 350 is the most hated level of all time. Since it has been nerfed, its title is now in jeopardy.
Timed levels are the only levels in which you are not pressured by the amount of moves you have left. However, you have to make quick decisions to earn three stars. Level 297 is the hardest timed level to earn three stars.
The first Candy Crush Saga support site, CrushingCandies.com, passed the limit of 5000 unique visitors per day in only 3 days.
Level 295 and Level 327 have the exact same layout with the only difference being the number of jellies. This has happened two other times in the 600s, but each has resulted in the higher level of the pair being replaced with a different type. Before this, no levels had been redesigned to a different type.
All the level numbers ending in 65 are hard or very hard. Level 65 used to be the most hated level ever, Level 165 used to be a very hard candy order level, Level 265 is a hard jelly level, Level 365 is a very hard candy order level, Level 465 is a hard ingredients level, and Level 565 is a very hard jelly level.
Except for Level 80 (timed) and Level 620 (ingredients), all world finales are Jelly Levels.
Levels contains the #'s 1,4,7 have a pattern where they form a hard level. Level 147, Level 417 and Level 471 are all hard levels. Maybe someday in the future if Level 714 or Level 741 comes out it will become a hard level.
Levels in the iOS version are marked by a bubble looking element. Once the bubbles were opaque, but after an update in late January, the bubbles became translucent and more colorful.
Levels ending in 47 are usually quite hard. Level 147 used to be an insanely hard jelly level and was considered one of the hardest levels in the game. Level 347 is, once again, an insanely hard candy order level with a high amount of orders. Level 447 is a hard jelly level where mystery candies can be quite troublesome. Level 547 is a very hard jelly level due to the awkward layout. Level 647 is a very hard candy order level with a complex order. Maybe when a level 747 comes out some day, that one will be hard as well.