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

Sid Meier and Firaxis team up once again, this time for a space strategy adventure Sid Meier’s Starships. Travel the space with a group of starships, protecting various planets from various forces of evil. Your goal is to reach peace amongst galaxies, to do so you will need to create a planetary federation, securing your home world. Follow the non-linear story with multiple ways to win, engage in skill-heavy tactical combat and bring peace to space!

Sid Meier's Starships is a turn-based strategy video game being developed by Firaxis Games and published by 2K Games. The title was released on March 12, 2015 for Microsoft Windows and iOS, and an OS X version to follow. The game is a stand-alone tit ...   more on Wikipedia

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

Anomaly: Warzone Earth Steam Key GLOBAL is a game released on 2011-04-08. Published by 11 bit studios.

Anomaly: Warzone Earth is a real-time strategy reversed tower defense video game by 11 bit studios. The game was initially announced in late 2010, and released on April 8, 2011 for Windows and Mac OS X. ...   more on Wikipedia

War for the Overworld is a management strategy game developed by Subterranean Games. Tired of being a Hero that must go to a dark and stinky dungeon? Constantly risking your life for a few shillings is not worth it? The demon slaying business gives you nightmares? Well then friends, prepare for quite an opposite experience with War for the Overworld! Control an almighty and malevolent Underlord, with limitless power and potential, and create your own dark dungeon, one no Hero could survive in! Punish the foolish attempts of mere mortals with your ingenious designs, mazes, numerous rooms and devilish fiends within your creation! You have your dungeon, and your minions, and if a trespassing hero proves to be one of an outstanding strength, you have your rituals and spells to show who's the real boss!

War for the Overworld is a real-time strategy video game developed by Subterranean Games. The game started as a Kickstarter campaign, which ran from November 29, 2012 to January 3, 2013. In the game, players build dungeons containing deadly traps to ...   more on Wikipedia

Anyone looking for the ultimate RPG sandbox experience should look no further than Mount & Blade: Warband key! The game still has plenty to offer for the modern gamer, even 9 years after its initial release and it is easy to see why. Untamed freedom With Mount & Blade: Warband key, you’re not limited by a restricting storyline, even though there is a story to the game. That means you can just go out and do whatever you please in a massive world, which makes Warband as replayable as a game can get. Add an amazing price to the game and there is no reason why you shouldn’t buy Mount & Blade: Warband key right now! Become Powerful! The game is not about starting off as a powerful character, instead, you start off as nothing more than a peasant set out to strive for greatness. And great you become, as you traverse the vast lands, going to battle with a plethora of opponents. The more you do, the more powerful you become and soon enough you will turn into a fierce leader, leading a large army of men who all wish they were you! What To Expect? One thing you won’t get with a Mount & Blade key is a thrilling storyline and amazing graphics, as not only is the game dated in those aspects, it was never about them in the first place. What you can expect is an adventure that allows you, the player, to take control of everything by yourself. Nobody is forcing you into completing side quests, or even main quests for that matter, as you do whatever you want, whenever you want! If you want a classic sandbox experience, don’t miss out on this one!

Mount & Blade: Warband is the first sequel to the action role-playing video game Mount & Blade. First announced in January 2009, the game was developed by the Turkish company TaleWorlds Entertainment and was published by Paradox Interactive on March ...   more on Wikipedia