The 9,999,999 in 1 carts are bootleg game cartridges that claim to have almost 10 million games but the truth is that the carts only have around 20 or less titles which repeat constantly with different settings and configurations (example: "Contra 50" is Contra starting in level 3 with the Spread Gun or "Mario 25" is Super Mario Bros. starting in World 3-1 with different physics like higher jump)

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