http://www.eurogamer.net/articles/nintendo-patents-in-game-hint-system
Nintendo has patented Shigeru Miyamoto's built-in walkthrough system where the computer can take control of characters to show them the correct route through tricky parts of the game.
Installed from a disc or online through servers, this invention hopes to reduce frustrating and time consuming elements so that more people finish games.
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Looks like Nintendo is doing another great thing for hardcore audience Then again it's good they patented it becouse now other companies won't be able to use it.
PROUD MEMBER OF THE PSP RPG FAN CLUB