BAD!

This is the worst typing teacher I have ever experienced. There is no reasoning behind the placement of the letters and half the time, when you hit the correct keys it doesn’t work — your sword just goes right through and damages you. I am an experienced typer and I couldn’t even figure out how the heck the game worked. Even though it is free, it is awful. DO NOT GET IT! There are plenty of other typing teachers that are much better and will give you a much more rewarding experience.

fighttrue about Typing Ninja - Breakthrough