(AZCENTRAL) — Use of an online game that simulates slavery has shocked and upset some Phoenix Elementary School District parents who say the tool trivializes a complex and potentially traumatic issue.

Mission US: Flight to Freedom has students adopt the persona of 14-year-old Lucy King, an enslaved girl trying to escape a Kentucky plantation. Following a choose-your-own-adventure format, students navigate the plantation master’s demands and plot a river escape, sometimes receiving beatings.

“I found out about it last week, when my son told me what happens in the game,” said De’Lon Brooks, whose seventh-grader attends Emerson Elementary, a K-8 school. “I was just like, ‘No. Not at all. That’s not going to work.’

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