The series has collectively generated over $1 billion in revenue for Konami, the publisher confirms.
Amidst growing rumours of a long-awaited revival, Konami has confirmed that the Metal Gear series has now hit 59.8 million units sold to date.
These silly boss fights might annoy you, make you laugh, or even make you wonder about the absurdity of it all - but they will remain with you long after you roll the credits.
Despite much of the franchise being currently unavailable on modern platforms, the Metal Gear franchise has shipped over 59.5 million copies.
These games are going to give you the ultimate power fantasy as you effortlessly make your way through hordes of enemies.
A tough but fair fight is great, but these bosses mistake a challenge of skill for a test of endurance and the like which in turn, make them annoying.
Unleash your inner rage with these games.
Which boss fights had the best mechanics and most emotional weight? Find out here.
Don't let their looks fool you - these weapons pack a surprising punch.
They may not seem like a big threat at first but these bosses posed quite the challenge.
Super heroes, cyborg ninjas, and Legos join the service this month.
Metal Gear Rising: Revengeance is also free for Xbox Live Gold subscribers next month.
For every great boss fight, there are several tired tropes surrounding it.
You can never have too many ninja/samurai games.
The violence never ceases to be fun in these games.
At times, you'll be asking whether these bosses are really worth the effort.
The Metal Gear spin-off also sold 85 percent less copies than Metal Gear Rising: Revengeance.
Blade Wolf and Jetstream DLC also free to download for Xbox 360.
When you put it that way...
The first entry in the series to come to the Mac and it starts Raiden.