保存/加载iphone游戏数据的最佳方法

I'm working on a puzzle game, the game engine holds a complex hierarchy of objects, from game actors to vectors to transition animations. Depending on the game state, they might add up from 10 to 1000 (in extreme cases). I've been delaying the moment until I'd have to work on the saving and loading of all that mess, as I have no experience on this, but now the moment I was fearing is about to arrive.I'm working on a puzzle game, the game engine h