Can you trust Left 4 Dead 2's Steam reviews? Adjusted rating 97.3%

Release date: 2009年11月16日 View on Steam

Official Steam rating
97.5%
1,064,017 reviews
Adjusted rating
97.3%
95% range 97.2%–97.4%
vs official −0.2pt
Japanese-language reviews
94.3%
2,614 reviews
vs overall −3.3pt

Overrated 400 positive and 400 negative reviews analyzed · data as of 2026-10-12

Summary

Left 4 Dead 2 holds an official Steam rating of 97.5%. After weighting 400 positive and 400 negative reviews by trust, the adjusted rating is 97.3% (95% range 97.2–97.4%), essentially the same as the official figure. Verdict: "Overrated" (the adjusted rating is 70% or higher, but the positive reviews carry low average trust).

Positive reviews average 0.67 in trust and negative ones 0.74; the difference shifts the rating by less than one point. The most common discount factor is very short reviews (54% overall).

The monthly history (193 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 97.0% (last 30 days: 96.7%), close to the all-time figure.

Japanese-language reviews (2,614) show 94.3%, close to the overall rating. In the last 180 days, Japanese-language reviews show 83.7%.

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.

ConditionPositive reviewsNegative reviews
Under 2 hours played at review3%10%
Very short text55%36%
Key activated outside Steam12%19%
Received for free3%1%
Owns very few games35%20%
Over 100 reviews written2%2%
Average trust (1.0 = full)0.670.74

The median total playtime of the sampled reviewers is 22.6 hours.

Rating history

Monthly positive and negative review counts since release, as published by Steam.

Reviews per month (green = positive, red = negative)
0 5,000 10k 15k 20k 2010-10: +16 / −0 2010-11: +218 / −2 2010-12: +448 / −3 2011-01: +120 / −2 2011-02: +85 / −0 2011-03: +76 / −3 2011-04: +82 / −1 2011-05: +82 / −0 2011-06: +89 / −1 2011-07: +476 / −1 2011-08: +115 / −2 2011-09: +86 / −1 2011-10: +114 / −0 2011-11: +139 / −0 2011-12: +554 / −3 2012-01: +149 / −2 2012-02: +85 / −3 2012-03: +96 / −3 2012-04: +98 / −0 2012-05: +100 / −2 2012-06: +84 / −0 2012-07: +828 / −7 2012-08: +303 / −1 2012-09: +162 / −1 2012-10: +263 / −7 2012-11: +349 / −2 2012-12: +409 / −0 2013-01: +279 / −3 2013-02: +160 / −3 2013-03: +338 / −5 2013-04: +224 / −1 2013-05: +190 / −2 2013-06: +249 / −3 2013-07: +658 / −3 2013-08: +261 / −0 2013-09: +172 / −6 2013-10: +180 / −1 2013-11: +964 / −18 2013-12: +4,283 / −121 2014-01: +1,730 / −36 2014-02: +976 / −19 2014-03: +1,272 / −33 2014-04: +696 / −14 2014-05: +686 / −12 2014-06: +2,106 / −46 2014-07: +1,411 / −32 2014-08: +815 / −29 2014-09: +1,392 / −33 2014-10: +946 / −31 2014-11: +1,276 / −45 2014-12: +1,424 / −44 2015-01: +1,126 / −40 2015-02: +758 / −26 2015-03: +693 / −31 2015-04: +631 / −24 2015-05: +568 / −24 2015-06: +2,459 / −90 2015-07: +1,167 / −53 2015-08: +1,832 / −71 2015-09: +796 / −32 2015-10: +954 / −46 2015-11: +1,836 / −86 2015-12: +2,425 / −96 2016-01: +2,379 / −91 2016-02: +2,175 / −74 2016-03: +1,246 / −54 2016-04: +897 / −47 2016-05: +1,334 / −50 2016-06: +1,714 / −86 2016-07: +2,033 / −79 2016-08: +1,066 / −39 2016-09: +724 / −37 2016-10: +1,011 / −43 2016-11: +7,570 / −116 2016-12: +2,611 / −92 2017-01: +2,903 / −96 2017-02: +2,023 / −88 2017-03: +2,263 / −107 2017-04: +1,311 / −65 2017-05: +1,109 / −43 2017-06: +3,902 / −169 2017-07: +4,816 / −171 2017-08: +2,014 / −104 2017-09: +1,565 / −78 2017-10: +1,461 / −72 2017-11: +8,886 / −151 2017-12: +3,862 / −121 2018-01: +3,407 / −115 2018-02: +2,617 / −122 2018-03: +1,823 / −86 2018-04: +1,207 / −66 2018-05: +1,900 / −66 2018-06: +2,433 / −112 2018-07: +2,699 / −115 2018-08: +1,573 / −78 2018-09: +1,083 / −52 2018-10: +1,153 / −51 2018-11: +6,958 / −163 2018-12: +2,033 / −86 2019-01: +1,911 / −93 2019-02: +1,833 / −101 2019-03: +1,250 / −65 2019-04: +1,188 / −48 2019-05: +2,596 / −80 2019-06: +6,549 / −134 2019-07: +7,139 / −166 2019-08: +1,197 / −59 2019-09: +892 / −61 2019-10: +2,591 / −85 2019-11: +10,681 / −180 2019-12: +9,626 / −212 2020-01: +8,097 / −181 2020-02: +6,912 / −189 2020-03: +7,527 / −163 2020-04: +7,507 / −174 2020-05: +5,729 / −137 2020-06: +6,284 / −148 2020-07: +9,283 / −201 2020-08: +6,046 / −129 2020-09: +14,966 / −429 2020-10: +11,369 / −282 2020-11: +13,618 / −210 2020-12: +11,148 / −254 2021-01: +10,511 / −216 2021-02: +7,089 / −177 2021-03: +7,551 / −193 2021-04: +7,213 / −178 2021-05: +10,692 / −270 2021-06: +9,197 / −252 2021-07: +12,432 / −291 2021-08: +11,366 / −320 2021-09: +8,524 / −201 2021-10: +7,746 / −180 2021-11: +11,147 / −186 2021-12: +9,246 / −216 2022-01: +11,339 / −255 2022-02: +8,288 / −201 2022-03: +6,073 / −160 2022-04: +5,847 / −151 2022-05: +5,478 / −146 2022-06: +7,163 / −182 2022-07: +12,249 / −277 2022-08: +8,057 / −212 2022-09: +5,637 / −151 2022-10: +5,653 / −181 2022-11: +12,976 / −237 2022-12: +13,025 / −302 2023-01: +14,685 / −296 2023-02: +7,496 / −187 2023-03: +10,846 / −252 2023-04: +6,910 / −198 2023-05: +6,330 / −186 2023-06: +7,050 / −184 2023-07: +16,518 / −414 2023-08: +8,437 / −250 2023-09: +9,124 / −243 2023-10: +7,195 / −198 2023-11: +11,603 / −217 2023-12: +9,841 / −262 2024-01: +11,593 / −332 2024-02: +7,378 / −243 2024-03: +9,254 / −322 2024-04: +5,986 / −290 2024-05: +5,647 / −212 2024-06: +7,107 / −314 2024-07: +11,579 / −340 2024-08: +6,981 / −218 2024-09: +5,185 / −181 2024-10: +5,706 / −192 2024-11: +17,025 / −336 2024-12: +11,543 / −284 2025-01: +8,009 / −234 2025-02: +8,329 / −249 2025-03: +7,543 / −226 2025-04: +5,096 / −171 2025-05: +6,418 / −205 2025-06: +8,501 / −249 2025-07: +7,948 / −253 2025-08: +5,672 / −193 2025-09: +4,526 / −155 2025-10: +6,396 / −189 2025-11: +6,004 / −175 2025-12: +6,757 / −211 2026-01: +6,816 / −199 2026-02: +5,031 / −147 2026-03: +6,160 / −187 2026-04: +5,164 / −163 2026-05: +6,032 / −184 2026-06: +6,315 / −212 2026-07: +8,516 / −264 2026-08: +6,254 / −194 2026-09: +4,606 / −141 2026-10: +3,465 / −120 2010/102011/012012/012013/012014/012015/012016/012017/012018/012019/012020/012021/012022/012023/012024/012025/012026/01
Positive share per month (months under 30 reviews omitted)
0% 25% 50% 75% 100% Monthly data overall 97.3% 2010-11: 99.1%2010-12: 99.3%2011-01: 98.4%2011-02: 100.0%2011-03: 96.2%2011-04: 98.8%2011-05: 100.0%2011-06: 98.9%2011-07: 99.8%2011-08: 98.3%2011-09: 98.9%2011-10: 100.0%2011-11: 100.0%2011-12: 99.5%2012-01: 98.7%2012-02: 96.6%2012-03: 97.0%2012-04: 100.0%2012-05: 98.0%2012-06: 100.0%2012-07: 99.2%2012-08: 99.7%2012-09: 99.4%2012-10: 97.4%2012-11: 99.4%2012-12: 100.0%2013-01: 98.9%2013-02: 98.2%2013-03: 98.5%2013-04: 99.6%2013-05: 99.0%2013-06: 98.8%2013-07: 99.5%2013-08: 100.0%2013-09: 96.6%2013-10: 99.4%2013-11: 98.2%2013-12: 97.3%2014-01: 98.0%2014-02: 98.1%2014-03: 97.5%2014-04: 98.0%2014-05: 98.3%2014-06: 97.9%2014-07: 97.8%2014-08: 96.6%2014-09: 97.7%2014-10: 96.8%2014-11: 96.6%2014-12: 97.0%2015-01: 96.6%2015-02: 96.7%2015-03: 95.7%2015-04: 96.3%2015-05: 95.9%2015-06: 96.5%2015-07: 95.7%2015-08: 96.3%2015-09: 96.1%2015-10: 95.4%2015-11: 95.5%2015-12: 96.2%2016-01: 96.3%2016-02: 96.7%2016-03: 95.8%2016-04: 95.0%2016-05: 96.4%2016-06: 95.2%2016-07: 96.3%2016-08: 96.5%2016-09: 95.1%2016-10: 95.9%2016-11: 98.5%2016-12: 96.6%2017-01: 96.8%2017-02: 95.8%2017-03: 95.5%2017-04: 95.3%2017-05: 96.3%2017-06: 95.8%2017-07: 96.6%2017-08: 95.1%2017-09: 95.3%2017-10: 95.3%2017-11: 98.3%2017-12: 97.0%2018-01: 96.7%2018-02: 95.5%2018-03: 95.5%2018-04: 94.8%2018-05: 96.6%2018-06: 95.6%2018-07: 95.9%2018-08: 95.3%2018-09: 95.4%2018-10: 95.8%2018-11: 97.7%2018-12: 95.9%2019-01: 95.4%2019-02: 94.8%2019-03: 95.1%2019-04: 96.1%2019-05: 97.0%2019-06: 98.0%2019-07: 97.7%2019-08: 95.3%2019-09: 93.6%2019-10: 96.8%2019-11: 98.3%2019-12: 97.8%2020-01: 97.8%2020-02: 97.3%2020-03: 97.9%2020-04: 97.7%2020-05: 97.7%2020-06: 97.7%2020-07: 97.9%2020-08: 97.9%2020-09: 97.2%2020-10: 97.6%2020-11: 98.5%2020-12: 97.8%2021-01: 98.0%2021-02: 97.6%2021-03: 97.5%2021-04: 97.6%2021-05: 97.5%2021-06: 97.3%2021-07: 97.7%2021-08: 97.3%2021-09: 97.7%2021-10: 97.7%2021-11: 98.4%2021-12: 97.7%2022-01: 97.8%2022-02: 97.6%2022-03: 97.4%2022-04: 97.5%2022-05: 97.4%2022-06: 97.5%2022-07: 97.8%2022-08: 97.4%2022-09: 97.4%2022-10: 96.9%2022-11: 98.2%2022-12: 97.7%2023-01: 98.0%2023-02: 97.6%2023-03: 97.7%2023-04: 97.2%2023-05: 97.1%2023-06: 97.5%2023-07: 97.6%2023-08: 97.1%2023-09: 97.4%2023-10: 97.3%2023-11: 98.2%2023-12: 97.4%2024-01: 97.2%2024-02: 96.8%2024-03: 96.6%2024-04: 95.4%2024-05: 96.4%2024-06: 95.8%2024-07: 97.1%2024-08: 97.0%2024-09: 96.6%2024-10: 96.7%2024-11: 98.1%2024-12: 97.6%2025-01: 97.2%2025-02: 97.1%2025-03: 97.1%2025-04: 96.8%2025-05: 96.9%2025-06: 97.2%2025-07: 96.9%2025-08: 96.7%2025-09: 96.7%2025-10: 97.1%2025-11: 97.2%2025-12: 97.0%2026-01: 97.2%2026-02: 97.2%2026-03: 97.1%2026-04: 96.9%2026-05: 97.0%2026-06: 96.8%2026-07: 97.0%2026-08: 97.0%2026-09: 97.0%2026-10: 96.7% 2010/102011/012012/012013/012014/012015/012016/012017/012018/012019/012020/012021/012022/012023/012024/012025/012026/01
Reviews per day, last 30 days
0 200 400 600 2026-09-13: +204 / −7 2026-09-14: +131 / −6 2026-09-15: +144 / −3 2026-09-16: +133 / −1 2026-09-17: +135 / −6 2026-09-18: +152 / −3 2026-09-19: +203 / −9 2026-09-20: +163 / −6 2026-09-21: +148 / −1 2026-09-22: +130 / −2 2026-09-23: +128 / −2 2026-09-24: +133 / −3 2026-09-25: +182 / −5 2026-09-26: +188 / −3 2026-09-27: +191 / −9 2026-09-28: +116 / −7 2026-09-29: +121 / −6 2026-09-30: +124 / −6 2026-10-01: +146 / −9 2026-10-02: +250 / −16 2026-10-03: +351 / −13 2026-10-04: +395 / −6 2026-10-05: +328 / −9 2026-10-06: +337 / −17 2026-10-07: +304 / −11 2026-10-08: +321 / −14 2026-10-09: +289 / −5 2026-10-10: +367 / −7 2026-10-11: +292 / −11 2026-10-12: +85 / −2 09/1309/2009/2710/0410/11

Recent sentiment

PeriodPositiveReviews
Last 30 days96.7%7,503
Last 180 days97.0%44,311
All time97.5%1,064,017
Japanese, last 180 days83.7%43

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