This most recent instalment in the Deus Ex series is the long awaited prequel to the hugely popular title originally released in 2000.

With a wealth of time behind its belt Eidos Montreal will have fans breathing a sigh of relief the moment the game is seen in motion. From the way augmentations to your character affect gameplay to the care with which the world around has been crafted the team at Eidos appears to have recognised what made the original such a hit and seeks to up the ante.

The protagonist, Adam Jensen, is a security specialist working for Sarif Industries founder and augment-entrepreneur David Sarif. The player is introduced to Jensen as he goes about his business on the eve of a hugely important political hearing due to debate the practice of human augmentation. Charged with protecting the staff at Sarif Jensen must fend off a devastating attack on the lab by heavily augmented, black op mercenaries.

The attack doesn’t go well for Jensen. Pretty much every important scientist is murdered and Jensen himself would be at death's door were it not for Sarif Industries' choice to augment him on the surgery table without his express written consent. He awakes, six months later, to find himself heavily augmented and tasked with finding out who was behind the attack.

As this is a Deus Ex we'll never really know who to trust or what is actually going on until the story is unravelled and the fate of humanity is decided, or at least the fate leading into 2000's Deus Ex. This quest for truth begins in Detroit, and simply walking the neon streaked mildly claustrophobic streets in these early passages of gameplay feels much like exploring the pages of a Sci-Fi comic.

Pedestrians make their way through the streets as heavily armed police intimidate or protect, while the alleyways and dark corners of the city are the hide the homeless, the rebellious and those down on their luck.

In the year 2027, two years before the birth of JC Denton and 25 years before Deus Ex, human augmentation has left the laboratory and has hit the production line. Corporations like Sarif Industries sell augments to those rich and powerful enough to afford them while factions such as the Humanity Front crusade against this sudden move to speed up evolution.

Detroit breathes oppression. The poorer areas are lined with dimly-lit, dilapidated apartment blocks. Working girls ply their trade. Around every corner the social problems sundering the city are on display, the debate over the mixing of man and machine rages and can occasionally spill over into violence while those addicted to the drug Nu-poz, used to help in the body's acceptance of these new augmentations, litter the streets.

As the Jensen trudges through this world his time can be split across combat, stealth, hacking, talking people’s ears off and general exploration.

Combat has Jensen jumping seamlessly from first-person to third with the use of a cover system - much like that in Gears of War - as he moves from cover to cover with the press of a button. Getting caught out of cover in a firefight can quickly see Jensen overwhelmed. The weapons available have a admirablly clunky realism to them and rockets, bullets and crossbow bolts are just a small taste of the available means with which enemies can be dispatched.

While most love firing off hundreds of rounds, for the peaceniks or ninjas out there, it is possible to play through dangerous areas completely undetected or using non-lethal weapons such as stun guns to pacify threats.

In fact, experience bonuses are gained from going unseen through entire zones. Using the same cover system used in firefights Jensen can move quietly and out of sight around sentries, or up to guards to perform both lethal and non-lethal surprise attacks.

Most players should expect to use a mixture of guns-blazing and secret-squirrel manoeuvres, or risk becoming overly familiar with the loading screen.

Available augmentations often determine the most practical way to navigate any given situation. With experience gained by completing quests and defeating enemies, Jensen ‘levels up’ and can add to, or gain entirely new augmentations. He can also buy the means for these upgrades, or find them as he explores.

Choose to upgrade to X-Ray vision and stealth will be much easier, as Jensen can monitor a guard’s patrol pattern through a wall. Upgrade to mirrored armour and laser security grids will no longer be a problem, or augment Jensen's strength in order to lift heavier objects and expose new paths, or punch through weak walls to snap the neck of an unsuspecting enemy beyond.

All of these elements combine to make the gameplay fast-paced and exciting, or, with a quick change of tactics, a little slower and more thrilling. Either way, completing tasks can be a wholly fresh experience.

Deus Ex: Human Revolution brings with it fears that the transition from PC to console could besmirch something great, and with the original Deus Ex sequel getting less than warm reviews it's a relevant concern.

However from what we have seen so far, Human Revolution is on track to be an exceptional addition to the universe; a Deus Ex made by people aware of what that requires.