So it was the modeling of the NES after a familiar consumer electronic, the VCR, that likely led to connector pin issues and, indirectly, the need to blow on the cartridge in order to play a game. When they switched to top-loading for the SNES, there was absolutely a reduction in read issues. So I wonder, and I suppose I won’t find an answer here, if in the regions where they used a top-loading Famicom they developed a blow-to-play for their fewer read errors or if there was never any need whatsoever.
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