As with the Master System, Sega also planned for a major push of the Mega Drive into the United States to challenge Nintendo's dominance among other markets, with the unit rebranded as the Sega Genesis. Sega was dissatisfied with Tonka's handling of the Master System and so sought a new partner through the Atari Corporation led by Jack Tramiel. Tramiel was bullish on the Genesis due to its cost, and turned down the offer, instead focusing more on the company's computer offerings.[1] Sega instead used its dormant Sega of America branch to run a limited launch of the console in August 1989 in test markets of New York City and Los Angeles, with its launch system being bundled with the port of the arcade game Altered Beast.[22]