ActionAdventure
ZERO PROTOCOL
The first hour is a test
Gets good by 1h almost every game dips in hours 2–3
Started playing 55% of owners
Steam reviews 83% positive of 644
What the data shows
- In the first 2 hours 1 in 2 reviews are negative (48%); after 4h it's 1 in 11 (9%).
- The opening is criticised more than in 75% of games we track.
- Few early reviews, so this is a rough estimate.
- Only 55% of owners have even the first achievement — the rest barely played.
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 655 Steam reviews in every language. Median playtime in a sample of 298 reviews: 4.7h for positive, 2.5h 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 (55.3% 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 (14)
- Electrician Turn on the emergency power supply 100%
- The elevator Start the freight elevator 77%
- Maintenance Open the maintenance hatch 69%
- Hacker Hack the security terminal on the residential floor 62%
- Stale air Turn off the air purification system 54%
- Return to home Complete your contract 52%
- Neural network Talk to AXSis 47%
- The end Destroy the complex 45%
- The best player Win in the arcade machine 41%
- Good morning Complete the Zero Protocol 36%
- The Dead world Go through the Monolith portal 26%
- Chief Scientist Talk to Victor Altman 25%
- Mind Fusion Go into the scanner 25%
- Shadow Become a Shadow 22%
Steam page Updated: 2026-10-21.