While it's difficult to say definitively whether Atomic Heart is directly inspired by BioShock, it's clear that the two games share some similarities in terms of their gameplay mechanics and atmosphere. Both games are first-person shooters with RPG elements, set in a dystopian alternate reality, and feature unsettling environments and creatures. That being said, there are also some key differences between the two games. Atomic Heart is set in the Soviet Union which has been taken over by rogue robots and features more futuristic technology and weapons, while BioShock takes place in an underwater city and features genetic modifications and a more steampunk aesthetic. Ultimately, it's up to each individual player to decide whether they see Atomic Heart as being directly inspired by BioShock, but it's clear that the two games share some common ground in terms of their themes and gameplay.