Ninja Jewel

There are many colorful crystal jewels! Some are special with Ninja! Your target is to connect same kind of jewels!
When 3 or more same kind of jewels are joined together, they are erased!
Furthermore, various effects will be demonstrated if special jewels are erased.
Lets erase more and more jewels to increase your score and put your name in world ranking!

*** Rules ***
- You can connect same color jewels in any direction - vertical, horizontal or diagonal!
- jewels are erased if three or more same jewels are lined together.
- If jewels are erased in large numbers at once, special type of jewels will appear!

*** Play Modes ***
-- Stage Mode --
Clear a stage to go to the next stage.
On the back side of some jewels, there are blocks. Break a block by erasing its front jewels.
When all blocks are broken, next stage will be unlocked! Play and take the challenge!
-- Classic mode --
In this mode, whenever it exceeds a fixed score, the level goes up.
If the level goes up, the timer becomes quicker.
upto what level can you continue? Take the challenge!
This mode has world ranking!