LUNA: War of the Moonlights is a PvX MORPG with MOBA elements. Engage in a new PvPvE experience where you defeat bosses to unlock paths, team up with allies to invade enemy territory, and grow your character through fierce battles. [How to Activate your Steam Key] Please follow these instructions to activate a new retail purchase on Steam: 1. Launch the Steam client software and log into your Steam account. 2. Click the Games menu option at the top of the Steam client. 3. Choose Activate a Product on Steam... 4. Follow the onscreen instructions to complete the process.