How much '80s video game art was ripped off?

[tangaroa]

Hardcore Gaming 101 tracked down the origins of a whole bunch of video game artwork. Schwarzenegger and Stallone are an entire section, and Frazetta was a big influence as well.

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From the same site: The European box art for The Guardian Legend is much better than the American box art, and the Japanese box art is a work of art.