Can you trust Project Zomboid's Steam reviews? Adjusted rating 93.6%
Genuinely great 400 positive and 400 negative reviews analyzed · data as of 2026-10-12
Summary
Project Zomboid holds an official Steam rating of 93.8%. After weighting 400 positive and 400 negative reviews by trust, the adjusted rating is 93.6% (95% range 93.4–93.9%), essentially the same as the official figure. Verdict: "Genuinely great" (the adjusted rating is 70% or higher and the positive reviews carry high average trust).
Japanese-language reviews alone show 83.0% (958 reviews, 95% range 80.5–85.2%), 10.8 points below the overall rating. Players writing in Japanese are noticeably less positive. In the last 180 days, Japanese-language reviews show 77.4%.
Average trust is 0.73 for positive and 0.74 for negative reviews, but the gap is too small to move the official rating much. The most common discount factor is very short reviews, at 44% of all reviews.
The monthly history (156 months) has no month where volume and negative share jumped together. The rating does not appear to be driven by a single episode.
The last 180 days show 90.3% (last 30 days: 90.5%), close to the all-time figure.
The adjusted rating estimates trust from how reviews are written; it does not judge any individual review as fake. Data as of 2026-10-12.
Positive vs negative breakdown
Share of sampled reviews that meet each condition that lowers trust. When a condition is more common on the positive side, the adjusted rating falls below the official one.
| Condition | Positive reviews | Negative reviews |
|---|---|---|
| Under 2 hours played at review | 1% | 12% |
| Very short text | 46% | 26% |
| Key activated outside Steam | 26% | 37% |
| Received for free | 1% | 1% |
| Owns very few games | 18% | 15% |
| Over 100 reviews written | 0% | 1% |
| Average trust (1.0 = full) | 0.73 | 0.74 |
The median total playtime of the sampled reviewers is 41.8 hours.
Rating history
Monthly positive and negative review counts since release, as published by Steam.
Recent sentiment
| Period | Positive | Reviews |
|---|---|---|
| Last 30 days | 90.5% | 7,942 |
| Last 180 days | 90.3% | 47,798 |
| All time | 93.8% | 488,002 |
| Japanese, last 180 days | 77.4% | 62 |
About this verdict
- Every figure is computed from review data that Steam makes public. No AI estimation is used.
- Review text is never stored or republished. Read the actual reviews on Steam.
- Read the methodology and its limits
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