Kerbal Space Program
Image: Steam store (© respective owners)

How do players who really played Kerbal Space Program rate it? TrueGG Rating 98.6%

Release date: Apr 27, 2015 Data as of 2026-10-19 View on Steam ↗

Players who really played rate it about the same as Steam overall. Early impressions are weaker, so the first few hours tend to decide whether it clicks.

Good for

  • Players looking for hundreds of hours

Think twice if you are

  • Players bothered by bugs (reports of crashes and bugs)

A rule-based guide from review patterns (no AI). How

TrueGG RatingMethodology ↗
98.6%
▲ +2.9 pt
vs Steam overall

Positive among players with 50+ hours (last 180 days) · 4,207 reviews

TrueGG, all time
96.7%
Steam overall
95.6%
Japanese, all time
98.1%

Early wall

Reviews written under 2 hours: 3.3% of all reviews. Their positive share is 76.6%.

This is not a drop-off rate; it describes who wrote reviews. Refund guide: within 14 days of purchase and under 2 hours of play (Steam refund policy).

01 / TRUEGG INSIGHTS

Does the rating change the longer people play?

Used for TrueGG Rating (50h+)JapaneseRight: reviews
Positive share by playtimeRanges from 50 hours up are highlighted. Exact values are in the table below.0%25%50%75%100%0–1 h81%1651–2 h88%1512–5 h98%1,5405–10 h98%1,78510–20 h99%2,22120–50 h99%2,80850–100 h99%1,634100–200 h99%1,253200+ h98%1,320Positive share by playtime0–1 h16581%1–2 h15188%2–5 h1,54098%5–10 h1,78598%10–20 h2,22199%20–50 h2,80899%50–100 h1,63499%100–200 h1,25399%200+ h1,32098%

Positive share by playtime at the time of review (reviews from the last 180 days). Ranges under 50 reviews are pale and dashed (indicative only); “—” means no reviews.

Show chart values as a table
PlaytimePositiveJapaneseReviews
0–1 h80.6%0.0%165
1–2 h88.1%—151
2–5 h97.7%100.0%1,540
5–10 h98.0%100.0%1,785
10–20 h98.7%100.0%2,221
20–50 h98.6%100.0%2,808
50–100 h98.5%100.0%1,634
100–200 h99.0%80.0%1,253
200+ h98.2%100.0%1,320

How long people play: half of reviewers had played 50+ hours. 69% had 20+ hours and 36% had 100+ hours (all time).

02 / TRUEGG INSIGHTS

Summary

Kerbal Space Program has a TrueGG Rating of 98.6%: the positive share among 4,207 reviews written in the last 180 days by players with 50+ hours, close to Steam's overall 95.6%. Players who really play it broadly agree with the headline number (all time: 96.7%).

Reviews written under 2 hours make up 3% of the total, with 77% positive. The early hours do not split opinion much.

Beyond the first hours, approval is fairly even across playtime.

Negative reviews most often mention crashes and bugs. Positive reviews praise how fun it feels.

Among Japanese-language reviews, the TrueGG Rating is 98.1%, similar to all languages.

Re-weighting reviews by trust signals (playtime, length, how the game was obtained) barely changes the rating (95.7% adjusted), so Steam's number is not noticeably distorted by key giveaways or throwaway reviews.

All figures come from Steam's public review counts, and topics are counted with our published dictionary (no AI). Data as of 2026-10-19.

03 / TRUEGG INSIGHTS

Why it is rated this way

What drives the rating

Complaints center on technical quality (Crashes & bugs). These can be fixed, so check recent reviews too. It is also a game many people bounce off early (early reviews are much less positive than those of players who stuck with it).

− Most mentioned complaints

  • Crashes & bugs14% of negative reviews (2% of positive) · most common among 2–20h players

+ What players praise

  • Fun & feel25% of positive reviews (13% of negative)
＋ 最高＋ リアル＋ 自由度＋ ステーション＋ 惑星＋ 現実＋ カーバル＋ 簡単− money− tutorial− sucks− early− before− save− buggy− sold

Counted from 331 recent negative and 600 positive reviews in Japanese and English, using our published topic dictionary. No AI is used. Topics overlap, so shares do not add up to 100%. Sarcasm and nuance are not detected, and this does not show cause and effect.How we count

04 / TRUEGG INSIGHTS

Checking the numbers

Figures with a different scope, shown alongside the TrueGG Rating.

MetricPositiveScope
Official Steam rating95.6%All time, all languages · 147,995 reviews
Adjusted rating95.7%Weighted by trust (95% range 95.5%–95.8%), ±0.0pt vs official
Japanese-language reviews94.9%All time, Japanese-language reviews (−0.8pt vs overall) · 605 reviews
Show the 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 review2%24%
Very short text39%26%
Key activated outside Steam11%14%
Received for free2%3%
Owns very few games27%9%
Over 100 reviews written1%4%
Average trust (1.0 = full)0.750.74

The median total playtime of the sampled reviewers is 25.2 hours. 400 positive and 400 negative reviews analyzed · data as of 2026-10-19

05 / TRUEGG INSIGHTS

When did the rating change?

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

Reviews per month

■ Positive■ Negative
0 2,000 4,000 6,000 2013-03: +85 / −1 2013-04: +189 / −2 2013-05: +158 / −7 2013-06: +296 / −4 2013-07: +479 / −7 2013-08: +186 / −4 2013-09: +198 / −4 2013-10: +183 / −3 2013-11: +536 / −7 2013-12: +1,588 / −28 2014-01: +799 / −16 2014-02: +603 / −10 2014-03: +384 / −8 2014-04: +834 / −18 2014-05: +574 / −11 2014-06: +1,311 / −20 2014-07: +663 / −16 2014-08: +392 / −6 2014-09: +316 / −5 2014-10: +552 / −16 2014-11: +497 / −10 2014-12: +1,284 / −28 2015-01: +608 / −19 2015-02: +471 / −13 2015-03: +481 / −17 2015-04: +1,517 / −34 2015-05: +856 / −52 2015-06: +679 / −29 2015-07: +345 / −15 2015-08: +358 / −23 2015-09: +248 / −14 2015-10: +433 / −17 2015-11: +478 / −24 2015-12: +723 / −31 2016-01: +589 / −30 2016-02: +440 / −21 2016-03: +385 / −13 2016-04: +702 / −28 2016-05: +356 / −18 2016-06: +370 / −23 2016-07: +438 / −25 2016-08: +369 / −35 2016-09: +316 / −16 2016-10: +474 / −30 2016-11: +2,123 / −33 2016-12: +515 / −23 2017-01: +529 / −31 2017-02: +432 / −22 2017-03: +394 / −17 2017-04: +339 / −13 2017-05: +769 / −44 2017-06: +763 / −127 2017-07: +536 / −17 2017-08: +319 / −17 2017-09: +378 / −19 2017-10: +548 / −380 2017-11: +1,579 / −74 2017-12: +481 / −36 2018-01: +397 / −16 2018-02: +342 / −53 2018-03: +722 / −192 2018-04: +254 / −168 2018-05: +320 / −563 2018-06: +373 / −366 2018-07: +243 / −98 2018-08: +173 / −68 2018-09: +126 / −17 2018-10: +137 / −18 2018-11: +1,400 / −30 2018-12: +239 / −20 2019-01: +236 / −15 2019-02: +196 / −19 2019-03: +194 / −16 2019-04: +140 / −23 2019-05: +229 / −21 2019-06: +1,076 / −42 2019-07: +1,249 / −35 2019-08: +317 / −25 2019-09: +193 / −19 2019-10: +537 / −20 2019-11: +3,001 / −31 2019-12: +1,898 / −34 2020-01: +1,753 / −34 2020-02: +1,526 / −21 2020-03: +1,661 / −32 2020-04: +1,371 / −27 2020-05: +1,426 / −25 2020-06: +1,555 / −54 2020-07: +1,470 / −23 2020-08: +996 / −20 2020-09: +722 / −9 2020-10: +1,112 / −28 2020-11: +1,381 / −36 2020-12: +1,485 / −41 2021-01: +1,460 / −43 2021-02: +1,114 / −32 2021-03: +978 / −19 2021-04: +828 / −18 2021-05: +1,021 / −21 2021-06: +1,356 / −47 2021-07: +1,094 / −41 2021-08: +857 / −34 2021-09: +819 / −34 2021-10: +788 / −36 2021-11: +949 / −27 2021-12: +908 / −34 2022-01: +981 / −32 2022-02: +713 / −21 2022-03: +774 / −27 2022-04: +785 / −33 2022-05: +818 / −32 2022-06: +772 / −29 2022-07: +826 / −25 2022-08: +736 / −22 2022-09: +738 / −26 2022-10: +884 / −31 2022-11: +998 / −199 2022-12: +1,057 / −58 2023-01: +1,072 / −55 2023-02: +1,012 / −43 2023-03: +953 / −58 2023-04: +559 / −32 2023-05: +424 / −17 2023-06: +531 / −17 2023-07: +666 / −35 2023-08: +480 / −21 2023-09: +486 / −28 2023-10: +460 / −24 2023-11: +481 / −21 2023-12: +547 / −17 2024-01: +480 / −23 2024-02: +449 / −17 2024-03: +456 / −21 2024-04: +412 / −17 2024-05: +486 / −18 2024-06: +601 / −23 2024-07: +618 / −24 2024-08: +434 / −6 2024-09: +524 / −25 2024-10: +363 / −11 2024-11: +429 / −6 2024-12: +445 / −13 2025-01: +446 / −17 2025-02: +502 / −13 2025-03: +607 / −18 2025-04: +512 / −16 2025-05: +476 / −12 2025-06: +526 / −78 2025-07: +1,036 / −36 2025-08: +592 / −54 2025-09: +430 / −22 2025-10: +539 / −19 2025-11: +507 / −13 2025-12: +569 / −15 2026-01: +524 / −12 2026-02: +684 / −21 2026-03: +734 / −31 2026-04: +2,916 / −70 2026-05: +4,116 / −88 2026-06: +1,877 / −45 2026-07: +1,500 / −45 2026-08: +1,300 / −25 2026-09: +885 / −20 2026-10: +588 / −10 2013/032014/012015/012016/012017/012018/012019/012020/012021/012022/012023/012024/012025/012026/01

Positive share per month

0% 25% 50% 75% 100% Monthly data overall 95.3% 2013-03: 98.8%2013-04: 99.0%2013-05: 95.8%2013-06: 98.7%2013-07: 98.6%2013-08: 97.9%2013-09: 98.0%2013-10: 98.4%2013-11: 98.7%2013-12: 98.3%2014-01: 98.0%2014-02: 98.4%2014-03: 98.0%2014-04: 97.9%2014-05: 98.1%2014-06: 98.5%2014-07: 97.6%2014-08: 98.5%2014-09: 98.4%2014-10: 97.2%2014-11: 98.0%2014-12: 97.9%2015-01: 97.0%2015-02: 97.3%2015-03: 96.6%2015-04: 97.8%2015-05: 94.3%2015-06: 95.9%2015-07: 95.8%2015-08: 94.0%2015-09: 94.7%2015-10: 96.2%2015-11: 95.2%2015-12: 95.9%2016-01: 95.2%2016-02: 95.4%2016-03: 96.7%2016-04: 96.2%2016-05: 95.2%2016-06: 94.1%2016-07: 94.6%2016-08: 91.3%2016-09: 95.2%2016-10: 94.0%2016-11: 98.5%2016-12: 95.7%2017-01: 94.5%2017-02: 95.2%2017-03: 95.9%2017-04: 96.3%2017-05: 94.6%2017-06: 85.7%2017-07: 96.9%2017-08: 94.9%2017-09: 95.2%2017-10: 59.1%2017-11: 95.5%2017-12: 93.0%2018-01: 96.1%2018-02: 86.6%2018-03: 79.0%2018-04: 60.2%2018-05: 36.2%2018-06: 50.5%2018-07: 71.3%2018-08: 71.8%2018-09: 88.1%2018-10: 88.4%2018-11: 97.9%2018-12: 92.3%2019-01: 94.0%2019-02: 91.2%2019-03: 92.4%2019-04: 85.9%2019-05: 91.6%2019-06: 96.2%2019-07: 97.3%2019-08: 92.7%2019-09: 91.0%2019-10: 96.4%2019-11: 99.0%2019-12: 98.2%2020-01: 98.1%2020-02: 98.6%2020-03: 98.1%2020-04: 98.1%2020-05: 98.3%2020-06: 96.6%2020-07: 98.5%2020-08: 98.0%2020-09: 98.8%2020-10: 97.5%2020-11: 97.5%2020-12: 97.3%2021-01: 97.1%2021-02: 97.2%2021-03: 98.1%2021-04: 97.9%2021-05: 98.0%2021-06: 96.7%2021-07: 96.4%2021-08: 96.2%2021-09: 96.0%2021-10: 95.6%2021-11: 97.2%2021-12: 96.4%2022-01: 96.8%2022-02: 97.1%2022-03: 96.6%2022-04: 96.0%2022-05: 96.2%2022-06: 96.4%2022-07: 97.1%2022-08: 97.1%2022-09: 96.6%2022-10: 96.6%2022-11: 83.4%2022-12: 94.8%2023-01: 95.1%2023-02: 95.9%2023-03: 94.3%2023-04: 94.6%2023-05: 96.1%2023-06: 96.9%2023-07: 95.0%2023-08: 95.8%2023-09: 94.6%2023-10: 95.0%2023-11: 95.8%2023-12: 97.0%2024-01: 95.4%2024-02: 96.4%2024-03: 95.6%2024-04: 96.0%2024-05: 96.4%2024-06: 96.3%2024-07: 96.3%2024-08: 98.6%2024-09: 95.4%2024-10: 97.1%2024-11: 98.6%2024-12: 97.2%2025-01: 96.3%2025-02: 97.5%2025-03: 97.1%2025-04: 97.0%2025-05: 97.5%2025-06: 87.1%2025-07: 96.6%2025-08: 91.6%2025-09: 95.1%2025-10: 96.6%2025-11: 97.5%2025-12: 97.4%2026-01: 97.8%2026-02: 97.0%2026-03: 95.9%2026-04: 97.7%2026-05: 97.9%2026-06: 97.7%2026-07: 97.1%2026-08: 98.1%2026-09: 97.8%2026-10: 98.3% 2013/032014/012015/012016/012017/012018/012019/012020/012021/012022/012023/012024/012025/012026/01

Months with under 30 reviews are omitted from the rate.

Reviews per day, last 30 days

0 20 40 60 2026-09-20: +40 / −2 2026-09-21: +31 / −1 2026-09-22: +26 / −1 2026-09-23: +27 / −0 2026-09-24: +29 / −1 2026-09-25: +37 / −1 2026-09-26: +54 / −0 2026-09-27: +47 / −1 2026-09-28: +34 / −0 2026-09-29: +29 / −0 2026-09-30: +32 / −3 2026-10-01: +30 / −0 2026-10-02: +45 / −0 2026-10-03: +38 / −1 2026-10-04: +51 / −0 2026-10-05: +31 / −1 2026-10-06: +33 / −0 2026-10-07: +31 / −0 2026-10-08: +29 / −0 2026-10-09: +44 / −0 2026-10-10: +33 / −1 2026-10-11: +44 / −1 2026-10-12: +28 / −1 2026-10-13: +28 / −1 2026-10-14: +19 / −1 2026-10-15: +16 / −1 2026-10-16: +31 / −0 2026-10-17: +31 / −1 2026-10-18: +25 / −1 2026-10-19: +1 / −0 09/2009/2710/0410/1110/18
Show monthly data as a table
MonthPositiveNegativePositive
2013-0385198.8%
2013-04189299.0%
2013-05158795.8%
2013-06296498.7%
2013-07479798.6%
2013-08186497.9%
2013-09198498.0%
2013-10183398.4%
2013-11536798.7%
2013-121,5882898.3%
2014-017991698.0%
2014-026031098.4%
2014-03384898.0%
2014-048341897.9%
2014-055741198.1%
2014-061,3112098.5%
2014-076631697.6%
2014-08392698.5%
2014-09316598.4%
2014-105521697.2%
2014-114971098.0%
2014-121,2842897.9%
2015-016081997.0%
2015-024711397.3%
2015-034811796.6%
2015-041,5173497.8%
2015-058565294.3%
2015-066792995.9%
2015-073451595.8%
2015-083582394.0%
2015-092481494.7%
2015-104331796.2%
2015-114782495.2%
2015-127233195.9%
2016-015893095.2%
2016-024402195.4%
2016-033851396.7%
2016-047022896.2%
2016-053561895.2%
2016-063702394.1%
2016-074382594.6%
2016-083693591.3%
2016-093161695.2%
2016-104743094.0%
2016-112,1233398.5%
2016-125152395.7%
2017-015293194.5%
2017-024322295.2%
2017-033941795.9%
2017-043391396.3%
2017-057694494.6%
2017-0676312785.7%
2017-075361796.9%
2017-083191794.9%
2017-093781995.2%
2017-1054838059.1%
2017-111,5797495.5%
2017-124813693.0%
2018-013971696.1%
2018-023425386.6%
2018-0372219279.0%
2018-0425416860.2%
2018-0532056336.2%
2018-0637336650.5%
2018-072439871.3%
2018-081736871.8%
2018-091261788.1%
2018-101371888.4%
2018-111,4003097.9%
2018-122392092.3%
2019-012361594.0%
2019-021961991.2%
2019-031941692.4%
2019-041402385.9%
2019-052292191.6%
2019-061,0764296.2%
2019-071,2493597.3%
2019-083172592.7%
2019-091931991.0%
2019-105372096.4%
2019-113,0013199.0%
2019-121,8983498.2%
2020-011,7533498.1%
2020-021,5262198.6%
2020-031,6613298.1%
2020-041,3712798.1%
2020-051,4262598.3%
2020-061,5555496.6%
2020-071,4702398.5%
2020-089962098.0%
2020-09722998.8%
2020-101,1122897.5%
2020-111,3813697.5%
2020-121,4854197.3%
2021-011,4604397.1%
2021-021,1143297.2%
2021-039781998.1%
2021-048281897.9%
2021-051,0212198.0%
2021-061,3564796.7%
2021-071,0944196.4%
2021-088573496.2%
2021-098193496.0%
2021-107883695.6%
2021-119492797.2%
2021-129083496.4%
2022-019813296.8%
2022-027132197.1%
2022-037742796.6%
2022-047853396.0%
2022-058183296.2%
2022-067722996.4%
2022-078262597.1%
2022-087362297.1%
2022-097382696.6%
2022-108843196.6%
2022-1199819983.4%
2022-121,0575894.8%
2023-011,0725595.1%
2023-021,0124395.9%
2023-039535894.3%
2023-045593294.6%
2023-054241796.1%
2023-065311796.9%
2023-076663595.0%
2023-084802195.8%
2023-094862894.6%
2023-104602495.0%
2023-114812195.8%
2023-125471797.0%
2024-014802395.4%
2024-024491796.4%
2024-034562195.6%
2024-044121796.0%
2024-054861896.4%
2024-066012396.3%
2024-076182496.3%
2024-08434698.6%
2024-095242595.4%
2024-103631197.1%
2024-11429698.6%
2024-124451397.2%
2025-014461796.3%
2025-025021397.5%
2025-036071897.1%
2025-045121697.0%
2025-054761297.5%
2025-065267887.1%
2025-071,0363696.6%
2025-085925491.6%
2025-094302295.1%
2025-105391996.6%
2025-115071397.5%
2025-125691597.4%
2026-015241297.8%
2026-026842197.0%
2026-037343195.9%
2026-042,9167097.7%
2026-054,1168897.9%
2026-061,8774597.7%
2026-071,5004597.1%
2026-081,3002598.1%
2026-098852097.8%
2026-105881098.3%
Show daily data as a table
DayPositiveNegative
2026-09-20402
2026-09-21311
2026-09-22261
2026-09-23270
2026-09-24291
2026-09-25371
2026-09-26540
2026-09-27471
2026-09-28340
2026-09-29290
2026-09-30323
2026-10-01300
2026-10-02450
2026-10-03381
2026-10-04510
2026-10-05311
2026-10-06330
2026-10-07310
2026-10-08290
2026-10-09440
2026-10-10331
2026-10-11441
2026-10-12281
2026-10-13281
2026-10-14191
2026-10-15161
2026-10-16310
2026-10-17311
2026-10-18251
2026-10-1910
06 / TRUEGG INSIGHTS

Recent sentiment

PeriodPositiveReviews
Last 30 days98.2%1,139
Last 180 days98.1%12,828
All time95.6%147,995
Japanese, last 180 days93.3%30
08 / TRUEGG INSIGHTS

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.

If you disagree with this verdict, please reach us via the contact on the About page. About

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