CasualIndie
Osmos
Give it 2 hours
Gets good by 2h almost every game dips in hours 2–3
Fully opens up by 3h rated like by long-time players
Started playing 72% of owners
Steam reviews 86% positive of 1,448
What the data shows
- In the first 2 hours 1 in 4 reviews are negative (23%); after 3h it's 1 in 12 (9%).
- Fully opens up by hour 3.
- 72% of owners got the first achievement.
When it gets good
Share of positive reviews by how many hours the reviewer had played when writing the review.
before it gets good opening up fully opened up
Based on all 1,442 Steam reviews in every language. Median playtime in a sample of 294 reviews: 5.3h for positive, 1.1h for negative. Almost every game is rated lower in the first 2–3 hours: that window includes refunds and quick first impressions. What matters is how deep the dip is and how fast the game recovers.
Where players quit
Share of players who started the game and reached each story milestone. 100% is the most common achievement (71.9% of owners), so people who bought the game and never launched it don't count.
Story milestones aren't labeled yet; all achievements are listed below.
All achievements (11)
- Disciple of the Osmos Complete all tutorial zones. 100%
- Voyager Unlock all zones. 29%
- Fittest Complete all Sentient zones. 23%
- Purity Complete all Ambient zones. 14%
- Black Hole Sun Collapse the system in level F2-3 by feeding the Attractor. 9.2%
- Gravitronics Complete all Force zones. 4.0%
- Graduate of the Osmos Complete the game. 4.0%
- Master of the Deep Complete five levels in any Forever zone. 2.4%
- Viral Master Complete three levels in each Sentient Forever zone. 2.1%
- Ambient Master Complete three levels in each Ambient Forever zone. 1.9%
- Master of the Force Complete three levels in each Force Forever zone. 1.7%
Steam page Updated: 2026-10-20.