yes there are, there are the regular coins and the gold coins.
how? there are no cheats on the game
One of the coins are located in trash cans,on a roof,on top of a big rock.the gold coins can be located in a thing where you have to break with your shadow clones.Even there are gold coins somewhere located around a lake where you found Sasuke.You have to use your chakura to walk on the water.I don't know if this helps but this is all I know.
By playing with your face!
http://www.strikebang.com/showthread.php?p=31751 look through the list... half way down... answers to other questions too! enjoy...
Case of Moba coins used for ninja royal.. which is 5,210 coins
You slice bananas in arcade mode.
But with no download...! I believe there's only one way, and that way is to have a glitch happen like say you have 10 ninja kiwi coins by getting some with the wheel of fate. then you add to of then to cart that cost 10 ninja kiwi coins each and then checkout and the next day you might get some if it says -10 or mines 10 ninja kiwi coins where it says your coins well NOW the next day after you done that again you should get allot of coins because that's what happened to me and i came up with... about... 2,02020 i think that's how much i had on my memory and my memory's good but usually i get on memory 1 or 2 numbers wrongs maybe you only get 2,020 instead.
You can buy in game items, such as in SAS Assault Multiplayer, where you are able to use ninja kiwi game coins to buy yourself better weapons to have a better chance of survival. This is only one example out of the many available.
Just play any of the extreme levels when you win the coins are awarded to you
First you need to become a ninja, when you've done that you will be able to enter the ninja hideout. Walk into the ninja hideout and you need to click the martial arts book to the right of your screen. Then you will be able to buy the ninja outfit for 1000 club penguin coins. Hope you found this information useful
You have to collect 20,000 coins and then go into the shop on the main menu, click on the button that says character and then find the ninja and purchase it.