After “KOF '98”, often praised by the fans as the best installment in the “KOF” series, and “KOF ’98 UM” 10 years later, “KOF ’98” returns now on the Steam PC gaming platform in an ultimate and final version with THE KING OF FIGHTERS ’98 ULTIMATE MATCH FINAL EDITION
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