Players may feel represented when playing Undertale because the game casts them in the role of a kind-of-sort-of self-insert character. The protagonist is deliberately gender-ambiguous and doesn't have a customizable appearance, but players can influence how the character behaves. This design allows players to see themselves in the game and have their choices and actions reflected in the narrative, creating a personal connection and emotional engagement with the game's characters and story. The game is also emotionally supportive and positive, addressing players directly in an uplifting way, which can resonate deeply on an individual level.
Additionally, Undertale uses musical leitmotifs and narrative devices that create a sense of familiarity, home, and emotional connection. These elements contribute to players feeling represented and emotionally involved because the game responds to their actions and reflects their moral decisions throughout the gameplay.
In summary, players may feel represented in Undertale due to the player's role as a gender-ambiguous, behavior-customizable character and the game's emotional and narrative design that directly engages and supports the player experience.
