When I bought this I didn't realise how addictive it would be.
You get to choose your "Ninja Name" which is quite funny, theres literally thousands of combinations of preselected names which you can either choose yourself or there is a random name option.
You start off as a novice and just like any martial arts you go through the belt system.
There are 6 mini games, each of which have 3 rounds to start off with, progressing to 6 rounds as you get to the higher belts.
In order to progress to a "Belt test" you need to complete all rounds within 5 of the mini-games.
As you go through the belts, more names are unlocked and the trials become increasingly harder.
I worked by way through the first Black belt and am half way through the 2nd.
The games are becoming more and more challenging and your reflexes need to be sharp, but thats the point of the game.
The cut scenes of your "Sensei" become boring and repetetive but at least you can just tap the screen to exit to the rounds selection screen.
The main downside of this game for me is that some of the games are getting ridiculously hard to complete so if you're like me, you will start to lose interest in trying to achieve that illusive challenge result.
Good game but can be frustrating at times.