War for the Overworld Digital Download Price Comparison
You can download with the CD Key directly from the store or from the game's publisher website. Please follow the steps and instructions given by the store.
For Steam Platform: Steam CD Key (Region Free / Worldwide), you must download and register the code on the Steam Client, you can Download it (HERE). Then once you login, click Add a Game (located in the bottom Left corner) -> Activate a Product on Steam. There type in your CD Key and the game will be activated and added to your Steam account game library.