This classic puzzle game seems very simple at first, but once you really get into it, you'll realize that it's one of the more difficult games that you've played so far. The game doesn't aim to be the most impressive looking puzzle game graphically,
The objective of the game is to simply move the entire stack that you start with from the left side of the screen to the right. You only have so many open spaces that you can use to accomplish this, but there is a catch. The stack that you have are made up of blocks all various in size ranging from smallest up top to largest down bottom. You can't put a big block on a smaller block, but you can do it the other way around.
This proves to be rather difficult and would definitely be the downfall to many cocky puzzle game players if it wasn't for the fact that there isn't any time limit or set number of moves. While that might make it less interesting to some of you, you'll have to give it a shot first to see whether or not you can actually clear the third level in one sitting.
Hanoi really pulls off being a simply designed yet complex in strategy puzzle game for the iPhone. You won't be looking at anything too remarkable graphically, but you'll be much more caught up in how to successfully move all those pieces for left to right then anything else.