Great Planes - 2008 XB-70 Valkyrie 3-6 was released on:
USA: 30 May 2012
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Currently there is one plane operating that uses 6 engines: The
Russian Antonov 225. In the past though there were several. The
Convair
B-36 "Peacemaker" and the XB-70 "Valkyrie" are 2 examples.
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SIX according to www.militaryfactory.com, the XB-70 was powered
by six GE YJ 93 engines, producing 30,000 pounds of thrust, and
having afterburn capability