I myself am not a heterosexual, but I did find some interesting meaning within this "empathy game". Having read through the artistic statement and the conversation in the comments of the game, I'm reminded of a concept in game design of the Magic Circle. The idea is that when playing a game, the players enter a magic circle wherein the game, including its rules, its logic, and more, temporarily becomes a reality that the player is a part of.

When someone puts a quarter into Pac-Man, they enter the maze; the yellow circle with a missing slice represents them; the jagged moving colours come to represent ghosts; the ones and zeros written within the machine become the laws of the universe.

Likewise, in Story of Heterosexuality, the player, be they heterosexual or not, enters the Magic Circle. The player walks through the maze, knowing that the heterosexual moving triangle is them; the other triangle becomes an opposite-gender partner, and the I-shape is sex; the smaller triangles are children; and grey represents death. And after death, the game ends; the curtains descend, and the player exits the Magic Circle having experienced art.