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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
$9.99 97.72% Apr 2011 351,043 1,932 98,460
$9.99 97.21% Oct 2007 146,181 510 20,672
$9.99 96.79% Nov 2009 1,232,195 21,569 162,399
$9.99 96.47% Nov 2004 97,844 1,994 64,085
Free 96.15% Aug 2022 12,843 132 3,751
-40% $5.99 96.11% Nov 2006 784,351 27,321 73,863
— 95.17% Oct 2007 51,065 16 1,419
$9.99 95.07% Nov 2004 441,670 51,978 100,056
$9.99 94.68% Nov 2008 339,306 482 30,616
Free 94.46% Sep 2022 364 40 1,793
$29.99 94.43% Oct 2016 216,400 1,299 27,631
Free 94.04% Jan 2024 26,305 151 7,483
Free 93.86% Apr 2021 31,713 57 5,194
Free 93.83% Jun 2015 59,542 60 3,545
$19.99 93.80% Mar 2020 260,922 1,058 7,158
— 93.76% Jun 2006 17,441 19 1,132
Free 92.74% Apr 2017 97,812 274 9,335
Free 92.61% Jul 2010 87,963 12 60,467
$19.99 92.15% Nov 2004 15,395 141 3,251
Free 91.73% Jun 2016 48,490 0 790
Free 91.50% Nov 2024 2,651 23 412
Free 91.33% Mar 2023 79 7 193
Source Filmmaker Application
Free 91.17% Jul 2012 135,043 1,114 3,975
Free 91.14% Apr 2012 2,119 0 48
Free 91.01% Apr 2017 6,561 1 56
$14.99 90.75% Oct 2013 69,277 68 4,818
Free 90.61% Mar 2015 46,424 42 3,175
$14.99 90.48% Jan 2014 263,305 215 121,575
Free 90.48% Oct 2014 35,506 4 1,184
Free 90.39% Apr 2023 53 6 113
Free 90.36% Jan 2014 10,617 2 1,202
Free 89.65% Oct 2007 1,407,826 52,459 253,997
Free 89.64% May 2014 71,583 73 3,537
$9.99 89.64% Sep 2005 26,693 287 7,507
Free 89.41% Dec 2014 12,938 16 1,015
Free 89.28% Jun 2023 3,232 25 675
$9.99 88.61% Oct 2006 16,879 33 623
Free 88.55% Oct 2011 200,585 632 10,922
— 88.52% Nov 2004 9,598 205 2,702
Free 88.17% Oct 2017 8,781 31 480
Free 88.01% Nov 2020 1,032 8 43
Free 87.63% Jan 2023 1,252 1 119
Free 87.59% Apr 2013 6,272 1 473
— 87.05% Oct 2005 14,618 3 180
Free 86.97% Sep 2005 26,351 85 2,940
— 86.52% Nov 2022 3,900 4 651
$19.99 86.27% Dec 2022 7,024 9 228
$9.99 86.18% Oct 2015 39,862 3 947
Free 86.15% Dec 2014 2,922 4 33
Free 85.46% Jan 2023 2,183 21 226
$29.99 85.39% Jan 2016 13,020 13 145
Free 85.06% Feb 2010 25,503 17 878
$9.99 84.95% May 2006 3,013 1 105
Free 84.91% Jan 2021 89 20 142
Free 84.34% Oct 2007 12,918 0 2,533
Free 83.97% Dec 2007 11,424 1 2,399
Free 83.85% Sep 2007 3,231 1 630
Free 83.33% Jul 2024 4,728 8 298
$9.99 83.14% Jul 2006 14,378 1 3,811
$9.99 82.94% Apr 2009 5,265 0 712
Free 82.88% Oct 2017 75,261 11 1,308
Free 82.34% Dec 2007 49,956 30 2,996
$9.99 82.28% Jul 2011 19,502 21 2,481
$9.99 82.24% Apr 2011 15,705 3 4,585
Free 81.86% Jul 2008 5,486 2 126
Free 81.82% Jun 2015 1,415 2 47
Free 81.77% Mar 2007 1,573 0 1,213
Free 80.89% Sep 2005 9,419 1 387
$4.99 80.66% Jul 2014 38,040 2 913
$14.99 80.60% Mar 2017 96,260 8 9,210
Free 80.44% Dec 2024 385 7 115
Free 80.05% May 2019 501 1 8
Free 79.09% Apr 2014 7,777 1 627
$17.99 78.68% Oct 2020 5,502 2 112
Free 78.54% Jun 2018 2,485 65 1,204
Free 78.31% Jun 2017 2,997 52 379
$19.99 77.84% Jul 2021 2,203 0 96
Free 76.35% Mar 2008 3,113 0 1,230
Free 76.13% Jan 2022 403 0 14
$9.99 75.70% Sep 2011 16,447 0 5,283
Free 75.49% Jan 2025 248 2 66
$4.99 75.00% Oct 2010 2,700 1 778
— 74.37% — — 3 15
— 73.98% — 10,010 0 1,184
Free 73.92% Jun 2017 884 1 20
Free 73.37% Jan 2016 3,604 0 114
$9.99 72.97% May 2006 6,834 45 223
Free 72.88% Jan 2008 11,504 0 224
Free 72.74% Mar 2016 1,305 0 25
$9.99 71.51% Oct 2013 71,611 34 7,624
Free 71.50% Jul 2016 29,778 3 1,123
Free 71.30% Sep 2019 389 0 11
Free 71.05% May 2014 14,387 1 900
— 69.49% Jan 2014 6,513 2 3,180
— 68.28% Nov 2006 740 0 270
$9.99 67.88% Jun 2004 21,321 24 629
Free 66.54% Sep 2014 16,758 7 529
Free 65.92% Jun 2012 28,135 162 4,124
Free 65.86% Sep 2020 26 0 44
Free 65.14% May 2014 18,091 1 3,155
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). 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: A list of Steam games using Source Engine. 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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