Action ATOM RPG Trudograd takes place 2 years after the end of the events of the ATOM role-playing game. After an atmospheric introduction, players receive a briefing stating that the protagonist must travel to Trudograd to find a scientist whose research can prevent a horrific disaster. The city is an old industrial and research center that managed to survive the Great War of 1986 largely intact. This city is essentially the field where all the expansion action takes place, and the districts are the available destinations on the world map.

As a standalone expansion, “Trudograd” implies that completing the previous game provides some benefits, such as the ability to directly import a character here (meaning a process that transfers the hero's statistics and world state of the imported save, rather than inventory and weapons. However, even if a person enters the expansion completely unaware of what happened earlier in the storyline, he can create a new character.

There is also a special card game called Bombagan, which you can play for fun or for money. The additions are both technical in nature, for example, noticeably improved graphics, significantly improving the atmosphere in snowy areas, and purely gameplay. There is also an updated ability tree, inventory optimization and the introduction of the ability to modify and improve weapons. Approximately 30 quests can be completed in a variety of ways and using different possible skills. It is also worth noting the differentiation / optimization of ways of conducting dialogues with NPS.