YandereDev is the online alias of Alex Mahan, an indie game developer known for creating the game Yandere Simulator. The game features a high school setting where players control a character named Ayano Aishi, who is obsessed with her crush and will eliminate anyone who stands in her way. Since its initial development in 2014, Yandere Simulator has gained a significant following, with fans eagerly awaiting updates. However, the game has also faced criticism and controversy regarding its development process and the creator's interactions with the community.