According to my source
Levels
This game is separated into levels,
and each level has its own requirements to complete. These requirements include
eliminating certain ingredients, removing gel-covered candies, or simply
reaching a certain score. The Facebook version of Candy Crush Saga currently
has 485 levels, and a new set of levels is released approximately every 3
weeks. The smartphone versions of Candy Crush Saga currently have 425 levels.
And more levels will come in the future.
Candy Crush Saga will sometimes
require a player to unlock a level before it can be played. A level can be
unlocked by asking Facebook friends for help, or by paying money.
Life system
The player is given a default maximum
number of five lives. The player needs at least one life to play a level. If
the player fails to complete a level, a life is deducted. Lives will regenerate
at a rate of one life every 30 minutes. The player can also restore lives by
asking Facebook friends for help, by paying Facebook credits or by paying money
(or, on iOS and Android, by setting the device's clock/date forward, although,
on some devices, the amount of time skipped forward will have to be made up in
the game if the clock is restored to the actual time).
Special Candies
Special Candies are created when four
or more candies of the same color are matched together. Special Candies have
special effects (e.g. clearing an entire row or column of candies) when they
are cleared. Examples of Special Candies include Striped Candies which remove a
row of candies, or a column depending on which way the stripes are facing.
Wrapped Candies remove the 3x3 box surrounding the wrapper. You can combine two
of the wrapped candies to make this an even larger explosion. Another special
move you can make is getting five colors of the same candy in a row to make a
Color Bomb which removes all candies of a certain color. One last combination
of special moves you can make is with a striped candy and color bomb combining
to make a blast of striped candies that correspond to that same color.
Special Candy Combinations
If a player tries to swap two adjacent
Special Candies, it will generally create a special combination effect. These
effects are often more powerful than the individual candies' effects. For
example. If you switch a Colour Bomb + Colour Bomb, it will clear all the
candies on the board. If you switch a Striped Candy + Striped Candy, the blast
will go in both horizontal and vertical way. If you switch a Wrapped Candy +
Wrapped Candy, it will do a huge 8x8 explosion two times. If you switch a
Colour Bomb + Striped Candy. All the candies of the Striped Candies colour will
turn into a striped candy itself and detonate. If you switch a Wrapped Candy +
Striped Candy, the candy will absorb everything in 3 rows then become a big
candy and clear out three rows horizontally and vertically. If you switch a
Colour Bomb + Wrapped Candy, the same colour candies as the wrapped candy will
detonate, then when the board cools down, a random color will be detonated
again.
Obstacles
Obstacles or blockers appear in some
of the levels. Obstacles have a wide variety of properties, and they are all
designed to make it more difficult to complete a level. Examples of obstacles
include chocolate that tries to slowly fill the entire game board, and
tornadoes that randomly destroy spaces on the game board. At time the levels
are incredibly difficult and it can be seen even with a dozen or more moves
left that it is impossible to complete the level. As a result there are
numerous levels which take so long to complete that many people become
frustrated or simply lose interest. The constant pressure to buy with real
money in order to complete is another sour point for many. Also it is often
observed that the timed bomb candies are regularly completely surrounded by
other colours and it takes more moves in order to get correct colours near
enough to use than the number of moves before the bomb candy explodes, this is
often seen as a deliberate ploy on the part of the makers in order to exhaust
lives on unfinishable levels. After many many plays at a particular level
suddenly this no longer happens suggesting that the software has been designed
to do this in order to encourage real money purchases.
Boosters
A booster is a single-use item that
can be used to help the player complete a level. Boosters are usually bought
with money. Every level in Candy Crush Saga can be completed without the use of
boosters,[4] but
the game difficulty ramp is designed to encourage the purchase of boosters.[5] Examples
of boosters include a Lollipop Hammer that can destroy any game square, and a
Free Switch that can swap any two adjacent candies.
Charms
In previous versions of Candy Crush Saga, a player could purchase charm
items to help them complete a level. Charms were much more expensive than
boosters, because charms could be used repeatedly. They can also be used for
purchasing more lives within the game.