Undertale
Playing now
1,698−540 vs. yesterday
15%of peak
All-time peak
11,071Mar 2025
Steam user reviews · 339,677 written
Updated
SteamPeaks Rating
96.5
Overwhelmingly positive · recent 95.5
Positive share
96.5%Overwhelmingly Positive
Last 30 days
96.1%−0.4 pts
4,632 reviews written
Played before writing
10.4 h
Median of 600 sampled reviews
Reviews per day
154
Mean over the last 30 days
How sentiment moved · share of new reviews that were positive
133 months on recordPositive shareReviews writtenLifetime shareDrag across the chart to zoom · double-click to reset
Data by SteamPeaks.com600 recent reviews sampled · back to 2 Sep 2026
Who is reviewing
10.5 h
Median before a positive review
8 h
Median before a negative review
92%
Bought the game on Steam
2% arrived with a free key
1%
Played mostly on Steam Deck
| Hours played | Positive | Negative | Positive share | Share of the sample |
|---|---|---|---|---|
| Under 1 h | 18 | 3 | 86% | |
| 1–5 h | 95 | 4 | 96% | |
| 5–20 h | 314 | 11 | 97% | |
| 20–50 h | 124 | 1 | 99% | |
| 50–100 h | 19 | 0 | 100% | |
| Over 100 h | 11 | 0 | 100% |
Steam’s own totals per language
Where opinion splits
| Language | Reviews | Positive | Against overall | |
|---|---|---|---|---|
| English | 190,582 | 96.5% | +0.0 pts | |
| Russian | 27,145 | 95.9% | −0.6 pts | |
| Chinese, simplified | 26,992 | 97.4% | +0.9 pts | |
| Portuguese, Brazil | 19,709 | 97.8% | +1.3 pts | |
| Spanish | 18,162 | 95.6% | −0.9 pts | |
| Turkish | 9,742 | 95.8% | −0.7 pts |
Counted from the review histogram
Milestones
| Milestone | Reached | Days taken | |
|---|---|---|---|
| 1,000 reviews | Sept 2015 | — | Reached in the first month on sale |
| 10,000 reviews | Nov 2015 | 61 | |
| 100,000 reviews | Apr 2020 | 1,674 |
Every month since Sept 2015
Review history
| Month | Reviews | Positive | Negative | Positive share | |
|---|---|---|---|---|---|
| Sept 2026 | 707 | 684 | 23 | 96.7% | |
| Aug 2026 | 5,504 | 5,275 | 229 | 95.8% | |
| Jul 2026 | 6,341 | 6,084 | 257 | 95.9% | |
| Jun 2026 | 4,024 | 3,834 | 190 | 95.3% | |
| May 2026 | 2,826 | 2,698 | 128 | 95.5% | |
| Apr 2026 | 3,264 | 2,803 | 461 | 85.9% | |
| Mar 2026 | 3,884 | 3,366 | 518 | 86.7% | |
| Feb 2026 | 2,829 | 2,709 | 120 | 95.8% |
Counts per month and per day come from Valve’s review histogram, so they are exact. Playtime, purchase and language detail come from a sample of the most recent reviews; we keep no reviewer identity and no review text. The SteamPeaks Rating is a confidence-adjusted positive share. How it is computed