My Big Sister is an engaging RPG-like adventure game that centers around the unique bond between two sisters, Luzia and Sombria. Set against a backdrop of mystery and dark themes, players delve into Luzia's story, filled with her signature sarcastic humor. The adventure begins on a harrowing night when the sisters are kidnapped by unknown assailants. Determined to reunite and return home, Luzia embraces her role as the protector of her older sister Sombria, whose fate remains shrouded in uncertainty.

Gameplay unfolds across multiple chapters from a top-down perspective, where players are challenged to solve intricate puzzles and collect essential items to progress the storyline. As players navigate the eerie environments, they will uncover secrets and face choices that lead to multiple endings, ensuring that Luzia and Sombria's story can unfold in different ways based on player decisions.

Features of the game include its compelling narrative, adventure-style gameplay, captivating pixel art, and an original soundtrack that immerses players into this gripping tale. Explore the depths of this chilling story and discover what it truly means to protect family in My Big Sister.