SimRefinery
Developed in 1993 by Maxis, many people don't know that Sim Refinery was actually created to simulate Chevron's refinery operations.
According to its creator, Will Wright, "[SimRefinery was] a simulation of their refinery operation, for orienting people in the company as to how a refinery works. It wasn't so much for the engineers as it was for the accountants and managers who walked through this refinery every day and didn't know what these pipes were carrying."
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