Intro :
Fallout 4 is an open world action role-playing video game developed by Bethesda Game Studios and published by Bethesda Softworks. The fifth major installment in the Fallout series, the game was released worldwide on November 10, 2015 for Microsoft Windows, PlayStation 4, and Xbox One. Fallout 4 is set in a post-apocalyptic Boston in the year 2287, 210 years after a devastating nuclear war, in which the player character emerges from an underground bunker known as a Vault. Gameplay is similar to Fallout 3. The player completes various quests and acquires experience points to level up their character. With first- and third-person perspectives available, players can explore Fallout 4 's open world setting at will, allowing nonlinear gameplay.
Overview :
Players have the ability to roam anywhere on the map, or leave a conversation at any time. They have the ability to customize weapons; the game includes over 50 base guns, which can be crafted with a variety of modifications, such as barrel types and laser focus, with over 700 modifications available. Power Armor has been redesigned to be more like a vehicle than an equipable suit of armor, and can also be modified, adding items such as a jetpack or selecting separate types of armor for each part of the suit. A new feature to the series is the ability to craft and deconstruct settlements and buildings. Players can select some in-game objects and structures, and use them to freely build their own structures. Players can build various defenses around their settlements, such as turrets and traps, to defend against random attacks.
At the beginning of the game, players are given points to spend on a character progression system called S.P.E.C.I.A.L.. The system represents seven statistics, namely strength, perception, endurance, charisma, intelligence, agility and luck. When players gain enough experience points to gain a new level, they unlock a new ability. When players allocate more points to a stat, more abilities can be unlocked. These perks can also be upgraded to improve the protagonist's efficiency and to further unlock new abilities. There are about 275 perks available for players to unlock. There is no level cap and the game does not end once the main story is complete.
The series also allows for the player to have a companion character follow and assist them, similar in style to Fallout 3 and Fallout: New Vegas. There are thirteen possible companions, seven of which (Dogmeat, Codsworth, Preston Garvey, Piper Wright, Nick Valentine, John Hancock, and Deacon) must be encountered during the main quests, although only Dogmeat is required to join. For the first time in the series, these followers can interact with the environment on the player character's behalf. For example, if the player character does not have required skills to hack a terminal or pick a lock, they can order the companion to do it for them. The player may only travel with one companion at a time, although the player is accompanied by other characters in certain quests. Some of the companions can be romanced by the player.
Storyline :
The story begins on the morning of October 23, 2077, with the player character and their spouse (Nate/Nora) preparing for an event at the Veteran's Hall when a Vault-Tec representative comes to inform them their family is approved for admittance into Vault 111. Moments later, a news bulletin warns of an imminent nuclear attack, forcing the family to rush to the vault, where they are temporarily trapped outside when a nuclear bomb detonates nearby. The platform below them lowers, and the family and other residents of the town are tricked into being placed in cryosleep.
Years later, the player and their spouse are re-awakened by two unknown individuals, who open the spouse's Cryo tube with the intent of taking the player's baby, Shaun. When the spouse tries to prevent the kidnapping, they are killed by one of the strangers, who takes Shaun and reactivates the survivor's Cryo tube. The Sole Survivor manages to get free of their Cryo tube in 2287, where they discover that they are the only survivor of Vault 111, as the remaining residents have died due to the strangers tampering with the Cryo tube controls and life-support system. Once they emerge from Vault 111, the Sole Survivor vows to avenge their spouse's death and find Shaun.
From here, the player is instructed to go to Diamond City, a settlement based in Fenway Park. With assistance from Nick Valentine, a synth detective, they locate their spouse's killer, a man named Conrad Kellogg, who reveals that their child - now 10 years old - is in the Institute, a secretive organization feared by the people of the Commonwealth that is based below the ruins of the Commonwealth Institute of Technology. The player then retrieves a cybernetic implant from the brain of Kellogg, and after viewing his memories, discovers they can only get to the Institute via teleportation.
The player is then tasked to go to the Glowing Sea - the ground zero of the nuclear blast shown early in the game - to find Brian Virgil, an ex-Institute scientist for the blueprints to build a device that hijacks the Institute's teleportation frequency and infiltrate the shadowy organization. After retrieving the blueprints, the player seeks assistance from one of three other factions: the Minutemen, the Railroad, or the Brotherhood of Steel. But before the device is built, the player infiltrates the Institute to find their son. After finding a child synth based on a young Shaun, it is revealed that the real Shaun was kidnapped in 2227, sixty years prior to their release from cryogenic sleep, and is now an old man - called Father - who is the leader of the Institute.
The player then faces a choice that will greatly affect the Commonwealth and its people. They can side with Shaun and help the Institute with their takeover of the Commonwealth by destroying the Railroad and the Brotherhood of Steel (The Minutemen can be spared with correct dialogue choices). They can also side against Shaun by assisting one of the other three factions; they can assist the Railroad in destroying the Institute and the Brotherhood of Steel in order to free and protect the synths; they can assist the Brotherhood of Steel in destroying the Institute and the Railroad in order to exterminate the synths or; they can assist the Minutemen in destroying the Institute (and the Brotherhood of Steel if the player is their enemy) in order to protect the Commonwealth.

Conclusion :
Fallout 4 is one of the greatest games released this year. It is the best among all Fallout parts. One of the best RPG games out there with a gripping story. More improvements are needed related to the game but still it is the #6 Best PC game of the year 2015. You would not regret playing it. I need to finish this post so I also go to play the game.
Fallout 4 Minimum Requirements
Note : Link is external, no guarantee of availability of file.