Atom Zombie Smasher: main story about 5 hours; story with some extras about 15 hours; 100% completion about 25 hours. These are IGDB player-submitted averages from 2 submissions, not a deadline or a prediction of your pace.
| Playthrough | Average time |
|---|---|
| Main story | 5 hours |
| Story with some extras | 15 hours |
| 100% completion | 25 hours |
Source: IGDB player submissions, 2 submissions, last updated July 2025.
About 5 hours to beat the main story of Atom Zombie Smasher, and about 15 hours with some of the side content. The story figure is the average for players who went to the credits without much of the side content, so a playthrough that wanders runs longer.
About 5 hours for the main story, 15 hours with some extras and 25 hours for 100%, going by the averages IGDB players have logged.
About 25 hours to complete Atom Zombie Smasher fully, about 5 times the main story.
Community playtime data is not available for Atom Zombie Smasher yet. Tracked platforms include Steam.
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