Being born dead seems like something you wouldn't just make up, so I'll assume that's legit. If you were born dead, I think you might be very aware of your own mortality and as such would avoid getting into fights. So that leaves #1 as the lie. I don't believe you've beaten every main pokemon game.
Indeed! I haven't beaten pokemon Yellow. I don't remember being born dead, so it's more just fun trivia then something that actively affects me. I've never gotten in a fight because I never needed to, I guess, haha. Good detective work, though!
I'll go with 3, wondering if you are morbid person, haha.
1. I spend more then $50 on League of Legends.
2. I never owned any of the GTA games.
3. I once almost drowned.