Super Mario Galaxy: main story about 9.5 hours; story with some extras about 14 hours; 100% completion about 19.3 hours. These are IGDB player-submitted averages from 7 submissions, not a deadline or a prediction of your pace.
| Playthrough | Average time |
|---|---|
| Main story | 9.5 hours |
| Story with some extras | 14 hours |
| 100% completion | 19.3 hours |
Source: IGDB player submissions, 7 submissions, last updated July 2026.
About 10 hours to beat the main story of Super Mario Galaxy, and about 14 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 10 hours for the main story, 14 hours with some extras and 19 hours for 100%, going by the averages IGDB players have logged.
About 19 hours to complete Super Mario Galaxy fully, about 2 times the main story.
Community playtime data is not available for Super Mario Galaxy yet. Tracked platforms include Other.
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