10 Video Game Mysteries That BAFFLED Gamers For Years

Batman: Arkham Asylum fanatics should be familiar with a hidden room inside the Warden's Office, which contains blueprints for Arkham City, hinting at the sequel. This secret was so well-hidden, nobody discovered it, compelling the creators to announce it two years after the game's release.

However, this isn't the only mystery that Arkham Asylum harboured. In Joker's Steel Mill, Batman can find a positive pregnancy test, suggesting Harley Quinn has a bun in the oven. This was a massive bombshell, especially if Joker turned out to be the daddy.

However, Batman: Arkham City made no reference to this sub-plot whatsoever. So, what happened? Did Harley lose the baby? Was it a random Easter egg? Did the supervillainess have the child in secret? Eager to get to the bottom of this, players began speculating endlessly, despite not getting any closer to an answer.

But there is one. In Arkham City's DLC, Harley Quinn's Revenge, a crib can be found in Harley's Hideout. By investigating this crib, you'll find a Joker doll surrounded by negative pregnancy tests. A box nearby warns the tests can produce false positives, indicating Harley was never pregnant, and the earlier test was a false reading.

It may be anticlimactic answer, but at least this lingering mystery had been put to bed.