Vim Ninja alternatives

It's a very cool concept but it needs to be fleshed out a lot to make it worth the purchase price. I would say that given the lack of diversity within the exercises that it is not a very effective learning tool in its current state. I liked: The drill concept seems like a good way to learn quickly The timer keeps track of your progress Instructions are concise I didn't like: Not very many exercises Doesn't cover all of Vim Not enough different tasks within each exercise: typically it is 1-3 tasks that move to different line numbers. Doesn't keep track of your speed so you can't see if you are improving