When buying you get a key (link) to humblebundle.com to activate the game in STEAM.
ABOUT THE GAME
Do you think that the game Tower Defense genre devoted to a building? You were wrong. Sanctum - this is not just another game in the style of Tower Defense. At the first destruction you are engaged in battle!
As one of the first in the history of Tower Defense - shooters, Sanctum took only the best from both universes to bring an epic, unique in its kind gaming experience.
Key features:
Co-op mode for 4 players; Why double the problem, if they can be multiplied by four?
5 fun, physically impossible guns!
4 competitive mode
Build is not just the tower, and the whole maze!
Find your way, or build it yourself! Our system will make the customization and then, and more.
Created by using the engine Unreal, game Sanctum - one of the most promising of independently developed games in the world!
87 achievements
Hidden secrets and easter eggs. Find them all!
So what are you waiting for? Sanctum, perhaps - the most popular product of its kind!

INSTALLATION BY REFERENCE

★ one of these links
★ In order to activate the game on account merely left click on Steam
★ Follow a link (To redeem, connect to Steam!)
★ authorize yourself online Steam
★ Click on the "Enable"

 *Attention !!! - Sometimes the game can not immediately check your library of games - it is necessary to restart Steam

<Delivery> This product is distributed through the digital distribution, and contains no packaging and boxes. </ Delivery>