Open World

Grand Theft Auto V

Set within the fictional state of San Andreas (based on Southern California), the single-player story follows three criminals and their efforts to commit heists while under pressure from a government agency. The open world design lets players freely roam San Andreas, which includes open countryside and the fictional city of Los Santos (based on Los Angeles). The story is centred on the heist sequences, and many of the missions involve shooting and driving gameplay.

Midtown Madness

Midtown Madness (also known as Midtown Madness: Chicago Edition) is a racing game developed for Windows by Angel Studios (now Rockstar San Diego) and published by Microsoft.

Grow Home

BUD: Gardener of the Galaxy. Deployed on a distant planet to grow a gigantic plant toward an orbiting spaceship, the clunky Botanical Utility Droid must deal with gravity and momentum relentlessly harassing its flimsy body. The resourceful little fellow has some tools to cope: a (broken) jetpack and a strong pair of hands to conquer the steepest slopes, and the ability to use flowers and leaves as hang gliders. Armed with resolve and no fear of heights, BUD will ride the giant plant's shoots into fertile floating islands... and meet the strange local lifeforms on a daring vertical journey.

Goat Simulator

W(h)ether you call it GOATY or just another sheepish hype train, here's as a rare example of an indie project going viral and hitting its release window without turning to crowdfunding.

Saints Row IV

Saints Row IV is an action-adventure video game set in an open world environment. It is developed by Volition, Inc. and published by Deep Silver. It was released for Microsoft Windows, PlayStation 3 and Xbox 360. It is the fourth installment in the Saints Row series, after the release of Saints Row: The Third in 2011. As in previous titles in the series, the player controls the leader of the Third Street Saints, who has now become the president of the United States.

Far Cry 3: Blood Dragon

Far Cry 3: Blood Dragon is THE Kick-Ass Cyber Shooter. Welcome to an 80’s vision of the future. The year is 2007 and you are Sargent Rex Colt, a Mark IV Cyber Commando. Your mission: get the girl, kill the baddies, and save the world.

Terraria

The game is a 2D adventure game. It features exploration, crafting, construction, and combat with a variety of creatures in a randomly generated world.

Prototype 2

Bigger, better, badder. Our new hero James Heller is an afro-american soldier who lost everything to the "Mercer virus". In videogame stereotype terms, that means constant angry gangsta swearing to compliment the gratuitous over-the-top violence. Sweet !

The Amazing Spider-Man

The Amazing Spider-Man is an open world action-adventure video game based on the Marvel Comics character Spider-Man and the 2012 film of the same name. It was developed by Beenox and published by Activision.

Source: Wikipedia

Retro City Rampage

Retro City Rampage is a downloadable action-adventure video game. It is a parody of retro games and pop culture as well as the popular Grand Theft Auto series and the games that followed it. In Retro City Rampage, players take control of a henchman of a major crime syndicate known as the Jester. The game is inspired by Rockstar's Grand Theft Auto games, in that the player can complete a variety of missions within an enormous city that is open to explore.