Includes Source SDK
76 games sharing this Steam feature
Popularity of 'Includes Source SDK' over time
This graph shows games released over the years with the Includes Source SDK feature and the percentage they represent. The number of releases gives an appreciation of the quantity of games published each year. It often tends to increase naturally, just like the total amount of Steam games released.
The percentage, on the other hand, gives a better idea of the trend a feature follows. It shows if, in proportion, the Includes Source SDK feature is getting more or less popular from a developer's perspective. The Review chart will tell us if this trend is a good thing (i.e. players interest is increasing, feature is undercrowded) or if it's the opposite.
The Includes Source SDK feature has peaked in 2020, with 7 games released. The popularity of the feature is in a range between 0.21% in 2010 and 0.00398120869495979% in 2019.
Bear in mind that 2023 is not over yet. The number of releases will continue to increase, but the percentage is already a good estimate of things to come.
Evolution of 'Includes Source SDK' game reviews
This chart shows the reviews for games with the Includes Source SDK feature, either as count and as a percentage of all Steam reviews, and the average value for a game. Note that if the chart is cluttered, you can always deactivate some lines by clicking on the legend.
While the review count clearly quantifies the reviews a feature receives, keep in mind that it also follows the popularity of Steam itself. The value normalized as a percentage of all Steam reviews is often more revealing, as it gives you the popularity trend for Includes Source SDK feature games.
A typical game associated with this feature collected on average between 346 (2010) and 7739 (2020) reviews. Bear in mind that it is the average, and it can be strongly influenced by extreme values, like the release of a very popular game with this feature.
The reviews per game as a percentage of the average show that games in the Includes Source SDK feature received between 888% (2013) and 1795% (2020) reviews compared to other features.
1998. HALF-LIFE sends a shock through the game industry with its combination of pounding action and continuous, immersive storytelling. Valve's debut title wins more than 50 game-of-the-year awards on its way to being named "Best PC Game Ever" by PC Gamer, and launches a franchise with more than eight million retail units sold worldwide.
|9.99||97.6%||Nov 16, 2004|
Counter-Strike: Source blends Counter-Strike's award-winning teamplay action with the advanced technology of Source™ technology.
|9.99||96.3%||Nov 1, 2004|
|Day of Defeat: Source|
Valve's WWII Multiplayer Classic - Now available for Mac.
|9.99||90.4%||Jul 12, 2010|
|Half-Life 2: Deathmatch|
Fast multiplayer action set in the Half-Life 2 universe! HL2's physics adds a new dimension to deathmatch play. Play straight deathmatch or try Combine vs. Resistance teamplay. Toss a toilet at your friend today!
|4.99||89.7%||Nov 1, 2004|
|Half-Life 2: Episode One|
Half-Life 2 has sold over 4 million copies worldwide, and earned over 35 Game of the Year Awards. Episode One is the first in a series of games that reveal the aftermath of Half-Life 2 and launch a journey beyond City 17. Also features two multiplayer games. Half-Life 2 not required.
|7.99||95.8%||Jun 1, 2006|
Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.
|9.99||98.5%||Oct 10, 2007|
|Half-Life 2: Episode Two|
Half-Life® 2: Episode Two is the second in a trilogy of new games created by Valve that extends the award-winning and best-selling Half-Life® adventure. As Dr. Gordon Freeman, you were last seen exiting City 17 with Alyx Vance as the Citadel erupted amidst a storm of unknown proportions.
|7.99||97.2%||Oct 10, 2007|
|Left 4 Dead|
From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.
|9.99||96.2%||Nov 17, 2008|
|Left 4 Dead 2|
Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008. This co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.
|9.99||97.6%||Nov 16, 2009|
|Zombie Panic! Source|
Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification.
|Free||84.4%||Oct 3, 2008|
|Pirates, Vikings, and Knights II|
Pirates, Vikings, and Knights II pits three teams against each other in a struggle for wealth, power and total domination. Whether using the Gunpowder Keg to clear out a territory full of enemies, or the Javelin to pin your dead foes to a wall, you'll find this game both hilarious and exhilarating.
|Free||87.1%||Feb 12, 2010|
Unique strategy/first person shooter mix: One commander on each team plays from above, choosing research, placing buildings and giving orders. The rest fill the role of soldiers on the ground, with four distinct classes to choose from and customizable vehicles to drive.
|Free||76.2%||Jul 28, 2008|
|Rise of the Triad|
Apogee Software and Interceptor Entertainment proudly present the rebirth of the cult-classic first-person shooter, “Rise of the Triad”. Bigger, better and more ludicrous than ever before.
|14.99||67.1%||Jul 31, 2013|
|No More Room in Hell|
The chances of you surviving this all out war of society and the undead are slim to none. Already, there are millions of the walking dead shambling about, searching for food to eat. There's no known cure. One bite can possibly end it all for you. However, you aren't alone in this nightmare.
|Free||83.8%||Oct 31, 2013|
Prove you are the world's greatest swordsman! Engage in tactical 1 vs. 1 sword fighting, 2 vs. 2, or sandbox FFA, or capture Control Points in a tactical slash-em-up.
|Free||68.8%||May 7, 2014|
|Fistful of Frags|
Multiplayer based, first person enabled, action packed and skill demanding shooter set in the Wild West times. A unique combination of non stop action and slow but powerful weaponry.
|Free||88%||May 9, 2014|
Lost Squad — fan-made Source Engine based game in Half-Life® 2 universe about what happened to Barney Calhoun after Half-Life® 2: Episode One events and why he was not in Half-Life® 2: Episode Two
|Pool Nation FX Lite|
Pool Nation FX, is a seriously fun Pool & Snooker Sim! A visually stunning billiards simulation with the critically acclaimed POOL NATION physics engine. Play 8 Ball, 9 Ball, Snooker, Killer & more, unlimited Career modes with customised difficulty levels, Trickshots, Local and Online Multiplayer, spectate live matches and feel...
|Free||83.2%||Dec 7, 2015|
|Double Action: Boogaloo|
Double Action is a free stylish multiplayer game about diving, flipping, and sliding your way into action movie mayhem.
|Free||87.6%||Oct 23, 2014|
Grab a weapon, demolish your enemies, level up, become more powerful, let the gore flow, let the limbs fly. BrainBread 2 introduces a zombie fps mixed with RPG / Arcade elements, the game is very action-packed and generally fast-paced.
|Free||82.3%||Mar 9, 2022|
|19.99||95.4%||Mar 6, 2020|
|Retaliation: Enemy Mine|
Retaliation: Enemy Mine offers challenging reasoning in a fast, easy and greatly enjoyable format, with the mission of making the spirit of wargaming immediately available to everyone, casual gamers and seasoned strategists alike.
|4.99||N/A||Jan 22, 2016|
|Star Crusade CCG|
Star Crusade: War for the Expanse is a free-to-play, online, digital collectible card game (CCG) based in a richly styled sci-fi universe, where each player takes command of one of the six factions vying for supremacy in an unclaimed exotic sector of space.
|Free||89.6%||Sep 7, 2016|
|Day of Infamy|
Experience close-quarters battles in iconic WWII settings. Defend the line, storm the beach, torch the enemy, or use a radio to call in fire support. Day of Infamy is a teamwork-oriented shooter that will keep you on your toes and coming back for more with its diverse game modes and authentic arsenal.
|14.99||84.2%||Mar 23, 2017|
|Alien Swarm: Reactive Drop|
Co-operative top-down shooter game available for free. An epic bug hunt featuring a unique blend of co-op play and squad-level tactics.
|Free||94.9%||Apr 20, 2017|