Basically Famicom is Japanese version of your NES. It got two worth mentioning add-ons that were forerunners for future gaming trends. First one was Famicom Modem. Even if it's quite primitive for today standards it allowed gamers to go online which was pretty revolutionary at the time. It was never used for online gameplay but provided content such as game reviews and previews, cheat codes, news, weather forecasts or even banking transactions and stock trading. Famicom Network idea was later expanded in SNES Satellaview.