Towers of Altrac is a 3D Tower Defense cooperation game for up to 4 players with an innovative A.I. system “S.A.D.”, which makes your enemies intelligent . Fight against the horde of Goblins, Orcs, Dragons and other monsters on 62 unique maps. The game is for every level of player experience.
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