Fascinating article on The Escapist about Brazil's history of producing local consoles that out-do the consoles offered by the big game companies:
To differentiate between the two largest consumer bases, America and Japan, Nintendo had stemmed the import and export of games by employing different cartridge connections between the Famicom (Japanese version with a 60-pin connector) and the NES (American version with 72-pins). Since Brazil had never been properly established on Nintendo's world map, no marketing decision had been made to determine how sales would be controlled. Being stuck in the middle, with an increasing number of legal and illegal NES cartridges being shipped in from across the globe, clone consoles began appearing in Brazil with two connectors to accept either of the formats. On top of that, some pirate cartridge manufacturers began turning out double-ended casings, with 60-pins at one end and 72 on the other! Many of the NES and 2600 clones, still available today, even come with a multitude of games built into the system.
Update: A reader writes, "here is a photo of a PolyStation which was available in pretty much every street market I went to in Rio de Janeiro this summer."