Middle-Earth: Shadow of Mordor is remembered for many reasons, but perhaps best of all for its Nemesis system, an incredible mechanic for generating memorable Orc encounters. According to a former executive, the Nemesis system came about from trying to solve a different problem: secondhand sales.

In a new video, Laura Fryer — former vice president of WB Games who oversaw the publisher’s Seattle studios at the time — talked about her time with Monolith. While discussing the way trend-chasing affects the industry, Fryer mentioned that chasing trends is what “literally led to the Nemesis system.”