Right after the payment you receive a unique link that can activate your gift on the personal account steam, or put a copy of the game Gift to your inventory.
This gift can be activated only in these countries: Armenia, Azerbaijan, Belarus, Georgia, Kyrgyzstan, Kazakhstan, Moldova, Tajikistan, Turkmenistan, Uzbekistan, Ukraine, Russia
Killing Floor 2 is the successor to the ridiculously fun and successful original title, that was released in 2009. We released Killing Floor 2 on Steam via Early Access in April 2015 and over the last 7 months have rolled out 3 massive content updates as we get closer and closer to the final release.

Keep watching for more information!

NOTE: It is quite likely that there are some regions where we may be required to make cuts in the future, particularly in the gore system, to comply with local ratings boards, once we get the game into its full release status. Regions most likely at risk of this are Germany (via USK) and Australia (via OFLC). Japan is another possibility (via CERO), but is an unknown quantity to us. To be quite clear: this means that, if you are buying from a region which regularly forces cuts on to games for gore, you may get reduced gore when we go to the full release version of the game.
The story
In KILLING FLOOR 2 players descend into continental Europe where the outbreak caused by Horzine Biotech’s failed experiment has quickly spread and gained unstoppable momentum, essentially paralyzing the European Union. Just one month after the conclusion of the events in the original KILLING FLOOR, the specimen clones are everywhere and civilization is in disarray; communications have failed, governments have collapsed, and military forces have been systematically eradicated. The people of Europe know survival and self-preservation too well and lucky survivors have gone into hiding.

Not all have given up hope though... A group of civilians and mercenaries have banded together, paid for by Horzine, to combat the outbreak and established privately funded operation bases across Europe. Upon tracking specimen clone outbreaks, players will descend into zed-laden hot zones and exterminate them.
Key Features
Visceral Gore - KILLING FLOOR 2 ramps up the gore with a proprietary, high powered persistent blood system bringing new levels of fidelity to the genre. Players will send entrails, severed limbs, and blood flying as they wade through hordes of enemies. But they need to watch out! If caught, enemies will rip them, and their entire party limb from limb
6 player co-op or solo play - A multitude of varied playable characters await for players to choose from as they enter the fray in online co-op mode or solo mode for those willing to brave the horrific specimens alone.
Terrifying Zeds - New enemies and fan favorites from the original game are back with expanded and smarter artificial intelligence, dishing out powerful attacks, attacking in mobs to weaken the player’s party and pushing the challenge level and fear factor to new levels.
New take on "Difficulty" - Most games just ramp up health and damage for the enemies. In KF2, the Zeds will start to behave differently as you work through the difficulty levels. New attack moves. New ways to get at you. New strategies. Be prepared for surprises!
Unique Blend Of Weaponry - Modern military assault rifles, brutal improvised makeshift weapons, classic historical guns, and off the wall “Mad Scientist” weapons, KILLING FLOOR 2 has a unique blend of killing tools that will satisfy any gamer.