“THE KING OF FIGHTERS XIII”, SNK PLAYMORE’s flagship 2D versus fighting title returns in an ultimate version on Steam!!The many features exclusive to the console version of the game, such as the ONLINE Mode that allows you to enjoy smooth online versus matches with rivals from around the world, the Tutorial Mode which can be enjoyed by...
Open the Steam client, login and locate the Games tab on the top menu. Click this and then select “Activate a Product on Steam…”
Enter your unique code that's displayed on the 'Orders' page of CDKeys.com and follow the prompts to activate.
Your game is now viewable in the “Library” tab and is available to download/install when you’re ready. You can find additional support for the Steam client here: https://help.steampowered.com/en/wizard/HelpWithSteam