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Comment by city41

7 years ago

Small correction, these are SNES games. The extra chips on NES games were primarily memory mappers and not as interesting as what SNES games did.

Even though the NES chips were still called "mappers" some of the later chips did a lot more, particularly on the Famicom, where cartridges could add extra sound channels. Even on the NES though you saw some minor graphics enhancements.