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Steam games using Source Engine. Detected automatically from game files. Source is a game engine developed by Valve. It debuted as the successor to GoldSrc. Source does not have a concise version numbering scheme; instead, it is designed in constant incremental updates. The engine began to be phased out by the late 2010s, with Source 2 succeeding it.

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Source is a game engine developed by Valve. It debuted as the successor to GoldSrc. Source does not have a concise version numbering scheme; instead, it is designed in constant incremental updates. The engine began to be phased out by the late 2010s, with Source 2 succeeding it.

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# Name % Price Rating Release Follows Online Peak
-80% $1.99 97.75% Apr 2011 360,167 1,294 98,460
-80% $1.99 97.29% Oct 2007 150,092 527 20,672
$9.99 96.79% Nov 2009 1,321,900 35,600 162,399
$9.99 96.51% Nov 2004 106,839 990 64,085
-50% $4.99 96.20% Nov 2006 823,745 16,362 73,863
Free 96.15% Aug 2022 13,725 44 3,751
— 95.19% Oct 2007 51,065 29 1,419
-80% $1.99 95.11% Nov 2004 444,414 1,630 100,056
-80% $1.99 94.77% Nov 2008 349,250 679 30,616
Free 94.70% Sep 2022 381 47 1,793
-85% $4.49 94.62% Oct 2016 235,500 1,720 27,631
Free 94.16% Jan 2024 27,612 53 7,483
— 93.79% Jun 2006 17,441 13 1,132
Free 93.77% Jun 2015 59,049 21 3,545
-40% $11.99 93.70% Mar 2020 263,092 435 7,158
Free 93.67% Apr 2021 31,761 24 5,194
Free 92.74% Apr 2017 97,978 102 9,335
Free 92.61% Jul 2010 87,714 18 60,467
-50% $9.99 91.98% Nov 2004 15,402 69 3,251
Free 91.95% Mar 2023 83 2 193
Free 91.72% Jun 2016 48,109 2 790
Free 91.70% Nov 2024 3,459 9 412
Free 91.28% Apr 2012 2,180 1 48
Source Filmmaker Application
Free 91.22% Jul 2012 142,624 889 3,975
Free 90.90% Apr 2017 6,666 1 56
-50% $7.49 90.78% Oct 2013 70,525 22 4,818
Free 90.63% Apr 2023 54 2 113
Free 90.62% Mar 2015 47,000 23 3,175
$14.99 90.47% Jan 2014 261,851 99 121,575
Free 90.45% Oct 2007 1,457,831 61,562 253,997
Free 90.44% Oct 2014 35,290 1 1,184
Free 90.40% Jan 2014 10,635 0 1,202
-80% $1.99 89.78% Sep 2005 27,274 152 7,507
Free 89.74% Jun 2023 3,512 2 675
Free 89.64% May 2014 71,492 55 3,537
Free 89.41% Dec 2014 12,962 14 1,015
Free 88.54% Oct 2011 203,209 471 10,922
— 88.46% Nov 2004 10,215 99 2,702
-75% $2.49 88.40% Oct 2006 18,224 25 623
Free 88.38% Nov 2020 1,100 3 43
Free 87.80% Jan 2023 1,368 0 119
Free 87.73% Oct 2017 9,764 13 480
Free 87.68% Sep 2026 309 40 604
Free 87.67% Oct 2013 — 3 966
Free 87.51% Apr 2013 6,290 0 473
-33% $10.04 87.26% Dec 2022 8,266 7 228
— 87.11% Oct 2005 14,618 2 180
Free 86.81% Sep 2005 26,728 40 2,940
— 86.72% Nov 2022 3,916 1 651
-50% $4.99 86.47% Oct 2015 40,466 8 947
Free 86.28% Dec 2014 2,960 4 33
-75% $7.49 85.30% Jan 2016 13,792 15 145
Free 85.25% Jan 2023 2,356 21 226
Free 85.10% Feb 2010 25,547 5 878
-80% $1.99 85.09% May 2006 3,309 2 105
Free 84.49% Jan 2021 92 1 142
Free 84.35% Sep 2007 3,281 0 630
Free 84.31% Oct 2007 12,874 0 2,533
Free 83.94% Dec 2007 11,376 1 2,399
Free 83.72% Jan 2026 1,543 157 9,395
Free 83.36% Jun 2015 1,502 1 47
-80% $1.99 83.32% Apr 2009 5,441 2 712
Free 83.23% Jul 2024 4,858 7 298
Free 83.13% Jan 2024 — 0 8
$9.99 83.03% Jul 2006 14,226 0 3,811
Free 82.90% Oct 2017 74,946 5 1,308
Free 82.74% Mar 2026 401 1 36
Free 82.59% Dec 2024 580 0 115
Free 82.52% Dec 2007 49,846 15 2,996
Free 82.36% Jul 2008 5,536 0 126
$9.99 82.33% Apr 2011 15,885 3 4,585
-75% $2.49 82.16% Jul 2011 19,963 10 2,481
Free 81.83% Mar 2007 1,585 0 1,213
Free 81.22% Aug 2026 2,398 12 477
Free 81.04% Sep 2005 9,489 0 387
$14.99 80.57% Mar 2017 95,504 7 9,210
-80% $0.99 80.40% Jul 2014 37,637 5 913
-15% $15.29 80.14% Oct 2020 6,889 6 112
Free 79.90% May 2019 529 0 8
Free 78.66% Jun 2017 2,991 2 379
Free 78.56% Apr 2014 7,768 0 627
Free 78.14% Jun 2026 2,685 58 1,204
-50% $9.99 77.95% Jul 2021 2,205 0 96
Free 77.23% Jan 2022 442 0 14
Free 76.91% Mar 2008 3,120 0 1,230
-90% $0.99 75.86% Sep 2011 16,452 0 5,283
-80% $0.99 75.02% Oct 2010 2,810 4 778
— 74.78% — — 1 15
Free 74.12% Jun 2017 910 0 20
— 73.95% — 9,922 0 1,184
$9.99 73.65% May 2006 7,297 13 223
Free 73.51% Jan 2025 408 0 66
Free 73.10% Jan 2016 3,695 0 114
Free 72.95% Jan 2008 11,438 0 224
Free 72.16% Mar 2016 1,326 0 25
Free 72.04% May 2014 14,445 1 900
Free 71.90% Sep 2019 410 0 11
$9.99 71.49% Oct 2013 71,479 20 7,624
Free 71.37% Jul 2016 29,816 3 1,123
— 69.66% Jan 2014 6,458 0 3,180
This page contains a list of Steam games using the Source Engine. We detect various technologies such as engines and SDKs used by games on Steam from depot file lists. This process is entirely automatic and does have mismatches, the rule set we use is available on GitHub. You can report issues and suggest new rules there.

These detections rely on our bot owning games to be able to see the file lists. Submit a key for your game improve our coverage!

Discount color explanation

Blue discount Product has not been this cheap before (new historical low). Lighter blue discount New historical low (rare discount): Previous historical low was set 1.5+ years ago, or significant price drop (50%+). Green discount Product is priced on par with lowest recorded price. Purple discount Product is priced on par with lowest recorded price in last two years.

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This page contains: Steam games using Source Engine. Detected automatically from game files. Source is a game engine developed by Valve. It debuted as the successor to GoldSrc. Source does not have a concise version numbering scheme; instead, it is designed in constant incremental updates. The engine began to be phased out by the late 2010s, with Source 2 succeeding it.

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