Since the release of Batman Arkham Asylum, the world has been spoiled with the best superhero video game franchise of all time. Over the years, people around the world have loved every second of the Arkham games. However, there are some facts that you may have missed over the years and here are ten of them, in particular.

1. HARLEY QUINN'S VOICE ACTOR

What if I told you that the same woman who was the voice of Bubbles in the hit series The Powerpuff Girls was also the voice of Harley Quinn? Yes, the same psycho who learns from the Joker!

2. BATMAN'S EXPLOSIVE GEL GADGET

I know you've wondered why the gel gadget Batman uses looks like whipped cream. Would you be shocked if I told you that whipped cream is precisely what produces that sound effect? The answer seems too easy, but alas, it is the truth.

3. IT TOOK TWO YEARS TO PROGRAM THE BATMAN CAPE

I really, really feel sorry for the poor bastard who had to spend two full years programming Batman's cape in Arkham Asylum. The man responsible for this project had to create several hundred animations to keep the cape realistic. I'm surprised his brain didn't melt completely.

4. PAUL DINI

Does anyone remember the television series Lost? If you need help remembering it, then it's that series that lasted for about 3,457 seasons with nothing being done. Anyway, Paul Dini, who wrote some of the first episodes of the series, also wrote Arkham City. You weren't losing your mind in Batman Arkham City when you thought, "Is this Lost?".

5. ARKHAM ASYLUM

Every Batman fan, and even fans who don't know much, know what Arkham Asylum is. Personally, I like to think of it as the Joker's playground, but did you know that it was inspired by the writings of H.P. Lovecraft? He was a famous author, and the asylum in the Batman Arkham games was inspired by him.

6. BREAKING THROUGH THE WALLS OF ARKHAM CITY

In Batman Arkham City, there is a bug that allows you to cross the walls of Arkham City. If you can do this, you will see things you never thought possible!

7. THE COMBAT SYSTEM

To be honest, the gaming world is a little lucky that the Batman Arkham games have gone so well. Originally, the developers of the game actually wanted the combat system to be a rhythm-based system where you hit flesh in corresponding colors. It makes me nauseous to know that this was almost the combat system of the game!

8. PEOPLE WHO HACK BATMAN ARKHAM ASYLUM ARE SCREWED

If a PC version of Batman Arkham Asylum detects that it has been hacked, the person concerned will be severely punished. Batman won't be able to glide around in his cape, and you can see where this could potentially cause problems! What a great way to say screw all the hackers!

9. OJ SIMPSON?

One of the convicts in the Batman Arkham series is OJ Simpson's cousin. At least, he had the same file number as him! There is no physical possibility that this is a coincidence because the booking numbers are not short.

10. A FAILED DARK KNIGHT GAME

The Dark Knight is a cinematic masterpiece, but did you know that a game was created for this movie? Since this game never saw the light of day, the world got to play Batman Arkham Asylum. If The Dark Knight game had been released, the world would never have been able to play Arkham Asylum.