Action Max, Bally Astrocade, Mattel HyperScan, GameWave, Arcadia 2001, Fairchild Channel F, and RCA Studio II.
ZAPiT Game Wave should be added. It's an obscure console with a micro-sized library that tried to enter a market dominated by the PS2, GameCube, and XBOX 360. In my opinion, the only redeeming quality of this system was that 6 players could play at once, but somehow it lasted 4 years and sold 70,000 units. Games are still floating around and are often mistaken for DVDs, and a few of these titles are very difficult to find.
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