The World of Terrifying Silence for OpenXcom enhances the classic TFTD experience by introducing a robust array of new content and challenges. Players can expect over 90 new weapons and items, a variety of new crafts and armaments, and an expanded set of missions that align with the game's lore. Additionally, the mod includes more than 36 new units, both friendly and enemy, alongside a wealth of new maps and USOpedia topics, which collectively enrich the gameplay experience.

This mod also incorporates features from other creators, such as the 'Extended facilities' by Blank and 'Moray' by tyran_nick, ensuring a comprehensive addition to the original game. The installation process is straightforward across different platforms, including Windows, Android, and Linux, allowing players to easily access this enhanced content. With support for multiple languages, including US English, Russian, and Korean, this mod broadens its accessibility to a diverse audience.