As Metal Gear's latest release Ground Zeroes continues to dance the line between 'worthwhile purchase' and 'paid-for demo', it's prompted many to reminisce on the series that once was. The very idea of actually evading enemies rather than engaging them was pioneered by one Hideo Kojima all the way back in 1987 in the original Metal Gear, but it wasn't until the series made the jump to 3D in 1998 with Metal Gear Solid that the world's collective jaw hit the ground. Scrambling to take in the infectious blend of East-meets-West ideologies and humour, along with a truly unique playstyle that was yet to be exploited and a sense of cinematography never seen before in gaming, Metal Gear hit the ground running, instantly fostering a diehard fanbase that are still with them to this day. Speaking of which, the series now has a myriad of titles under its belt - there's even a card-based spin-off in the portable-only Metal Gear Acid - and it's about time we dissected the fantastically enjoyable masterpiece for all it's worth. Perhaps you're one of the aforementioned diehards in need of a gruff-voiced fix of nostalgic goodness, or you're one of the people who's been feeling the murmured rumblings of the fanboys for almost a decade and a half, wondering just what are some of the series' highlights? Either way, this list contain some spoilers, but nothing detrimental to your enjoyment should you decide to give the franchise a go.