At a point of the movie, Diana questions Julián about if he knows an arcade videogame about a rhombus that it must to cover a panel to watch a nude girl. This game is Gals Panic! (1990), which was the first of a franchise very popular in the 90s and 2000s: in the game, there are six levels or girls to chose (Japanese porn actresses Ayami Kida, Emi Nakahara, Marina Matsumoto, Nami Ozawa, Shiori Asano and Yuki Miho, in the game referred only by name) and three panels per girl. The players, using the rhombus as marker (green for player 1 and blue for player 2), must to uncover the silhouette of the girl from background avoiding the guardian of each panel, which moves constantly by the panel trying to kill the markers. When the 80% of the silhouette is uncovered the panel is finished, although the final goal is to capture 100% of silhouette by limiting guardian's movement to an area without silhouette. If the 100% is obtained in the three panels, the girl progressively get naked until the full frontal.