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Sony PSX. This white version of the PS2 never left Japan. It was both a console and a media center type device.
Toshiba Nuon, a dvd player and game console in one. The Nuon technology could be licensed. Samsung made a similar device.
3DO consoles were made by multiple companies. This one is from Sanyo.
The 220 Matchline was a premium model in Philips' CDi range of consoles
Sega's Multi Mega combined a Megadrive and a Mega CD in one portable console