This gift can only be activated in these countries: China
Contained 2 items: Killing Floor, Defense Alliance 2

Killing Floor is a cooperative first-person survival horror shooter set on the streets of abandoned cities and the outskirts of Britain, shortly after the failed experiment to create and clone "super soldiers". You and your comrades - members of the troops of the armed forces, dropped into these places with a simple task - to survive as long as possible, clearing the landing zone from the consequences of a failed experiment!
* Cooperative gameplay - six players against countless mutants
* Upgrade system that allows you to use online achievements to improve the skills of the hero
* Over 170 achievements, such as Respect for Death, awarded for killing 10 monsters devouring the corpses of your teammates or Hot Fun for killing 25 burning monsters with a crossbow
* Function of time dilation "ZEDtime", allowing you to see in detail the game moments even in multiplayer
* Single game mode "in one"
* Ten types of monsters, concerned only with ripping off your head. In addition to jaws and claws, these offspring can be armed with chainsaws, machine guns or even a grenade launcher.
* Wide, with more than thirty-three types of weapons, a choice of weapons - from knives and a fire ax to a shotgun, rifles and flamethrower
* Welding devices, medications and armor designed to facilitate survival
* Improvement system. You can choose the ones that will help you withstand the countless hordes of mutants or just be useful to your team
* Open, non-linear game world: you are free to choose where and when to fight or retreat. Weld doors to force monsters to detour through narrow corridors
* Fully customizable, allowing players to change the difficulty of the level, the number of waves, or even set up their own, made up of their favorite monsters
* Support for Steam and Steamworks functionality
* A set of materials for creating new levels and mods