Everyone here is trolling, I'll just tell you what it really stands for.
AoT = Apple on Titties.
It's a Japanese hentai game where you have to rape a girl and leave an apple on her unconscious/dead body, if you don't you are just a rapist and the police pursuit you.
Only 1 level was finished, it's just some subway, the easiest way to rape a girl there is wait for them to use the bathroom and rape her there, with all the sound no one will hear her screams. Works every time. You can download some other levels too.
c: