Katie Fillmore tells PEOPLE she was at a family gathering when a lightbulb went off—she thought it would be a blast to turn her family's quirks and personalities into a game.

"They were intrigued but skeptical at first," Fillmore tells PEOPLE exclusively. "Once they saw their faces on the board, though, it turned into a mix of laughter and excitement.

"It seems like many people plan to make it for their own families," she shares. "The way this game would immediately hurt my feelings. Lol 😂," one user commented.