This game is not what you usually see on Steam. In Garry's Mod, you enter a physics sandbox which provides you with tools to make what you want happen and leaves you to it. You can play alone or join thousands of other players kidding around and playing with physics. If you do try this game, do check out its Steam Community Workshop

Garry's Mod or GMod (stylized as garry's mod) is a sandbox physics game using a modified Source engine, created by Garry Newman. Garry's Mod was originally a modification, a "mod", for Valve's Half-Life 2, but was later made into a standalone game. I ...   more on Wikipedia

XCOM: Enemy Unknown is an action strategy game developed by Firaxis Games. Play as the commander to a special paramilitary unit called XCOM. Your job is to protect earth from global alien invasion. Manage resources, advance technologies, and plan out individual units as well as global scale strategies to fend off the invading foe! Engage in over 70 unique missions, interact and negotiate with world governments, research alien devices and customize your own instruments of death! Build a base, develop it, grow your own units and participate in turn-based close combat!

XCOM: Enemy Unknown is a turn-based tactical video game, developed by Firaxis Games and published by 2K Games. The game is a "reimagined" remake of the 1994 cult classic strategy game UFO: Enemy Unknown (also known as X-COM: UFO Defense) and a reboot ...   more on Wikipedia

Buy Elite: Dangerous key and explore the vast cosmos controlling your very own starship! Developed and published by Frontier Developments the title boasts of scale and size that can only be compared to the grandiose size of our own Milky Way. Embark on an epic adventure with expansive narrative, complete freedom, and a whole lot more to discover with the broad multiplayer connectivity at hand. Shape the Universe Your space odyssey begins with only a tiny starship and a few spare pennies in the account. You’ll have to do whatever this reality may require in order to survive, and even more so, to gradually progress. Buy Elite: Dangerous key and shape the faith of the universe – players’ actions are detrimental in this piece, as every action taken can lead to both, a great fortune, or devastating havoc. Traverse the Milky Way The game offers you to traverse a playground that spans through 400 billion star systems! So, there’s literally no end to your exploration and progression, furthermore, these are real stars, planets, moons, asteroids and even black holes that you’ll get to reach – all of them are also replicated to meet their true proportions! The size of the game will simply take your breath away. Expect the Unexpected What’s your goal here? Buy Elite: Dangerous key and figure it out for yourself! Upgrade and enhance your ship and partake in a whole bunch of activities until you’ll find the one most suited for your playstyle. Conduct business with tons of other players or play solo – everything depends entirely on you. The cosmos is unpredictable, and so will be your journey, enjoy it!

Elite: Dangerous is a space adventure, trading, and combat simulator that is the fourth release in the Elite video game series. Piloting a spaceship, the player explores a realistic 1:1 scale open world galaxy based on the real Milky Way, with the ga ...   more on Wikipedia

Robin Hood: The Legend of Sherwood Steam Key GLOBAL is a game released on 2002-11-01. Published by Microids.

Robin Hood: The Legend of Sherwood is a 2002 stealth-based real-time tactics video game developed by Spellbound Studios. It is similar to games such as Desperados: Wanted Dead or Alive and the Commandos series. In the game, the player controls up to ...   more on Wikipedia