Updated June 24, 2017 - Added information for the game SpeedRunners.
Here is a list of developers, publishers, and games I have a personal experience in dealing with because of my YouTube channel in regards to getting AdSense approved for monetization using their games. This list will grow the more I add videos to my channel. Your experience may vary. If you really want to be covered for video game monetization for your channel, consider applying to a Multi-Channel Network that provides licenses to use video game footage for monetization. If the game or company you're looking for isn't in this list, you will have to do some additional research on your own.
Approved for Monetization
Developer: 505 Games
Details: 505 Games allows videos to be monetized but reserves the right to withdraw permission. I researched this specifically in regards to the game Brothers: A Tale of Two Sons, which they have acquired all rights to from Starbreeze Studios.
Example Games: Brothers: A Tale of Two Sons
Details: Bethesda allows YouTube monetization for their games, with conditions.
Example Games: The Dishonored series, the DOOM series, the Elder Scrolls series, The Evil Within, the Fallout series, Rage, the Wolfenstein series.
Details: Blizzard allows YouTube and Twitch monetization with certain limitations.
Example Games: Diablo III, Hearthstone, Heroes of the Storm, Overwatch, Starcraft, World of Warcraft
Details: The only information I have so far is in regards to Destiny. From their help page, "If monetization services are activated, the content in question must be at least 20% user generated. This includes analytical voice overs, narrative edits, graphics, or personal gameplay."
Example Games: Destiny
Details: I have emailed Crytek in the past in regards to YouTube monetization, specifically for the game series "TimeSplitters", which they have the rights to after acquiring the original developers, Free Radical (who then became "Crytek UK" before transitioning over to Deep Silver). I never received a response from Crytek, but they have since made a Video Policy page on their website confirming that they approve of advertisements on their games.
Example Games: Crysis, Ryse, Warface, TimeSplitters.
Developer: Deep Silver
Details: I can't guarantee you will get an approval like I did as Deep Silver doesn't have one blanket statement on their site detailing what their policy is, but I was able to email them regarding my Dead Island videos and they quickly emailed me back giving me permission for those specific videos.
Source: Email confirmation from Deep Silver
Example Games: Dead Island is what I asked about specifically. They may have different policies per game.
Developer: DoubleDutch Games
Publisher: TinyBuild Games
Details: TinyBuild Games specifically allow monetization for the game SpeedRunners. I have not researched other games from the publisher.
Source: official Steam thread.
Example Games: SpeedRunners
Developer: Double Fine
Details: Double Fine allows YouTube monetization for their games.
Source: FAQ Page
Example Games: Broken Age, Brutal Legend, The Cave, Grim Fandango, Massive Chalice, PsychoNaughts.
Details: From their help page, "EA does not object to fair uses of video footage or screenshots on video sharing sites, including YouTube channels that are commercialized, as long as the footage is a version of the game that we have released to the public." The exception being games with licensed content, such as music or brands (i.e., cars in racing games), much like Microsoft.
Example Games: Too many to list.
Developer: Epic Games
Details: Epic allows YouTube monetization for their games.
Example Games: Bulletstorm, the Gears of War series, Fortnite, the Infinity Blade series, Shadow Complex, the Unreal series.
Developer: Galactic Cafe
Details: Davey Wreden allows YouTube monetization for all Galactic Cafe games.
Example Games: The Stanley Parable
Developer: Insomniac Games
Details: Insomniac allows YouTube monetization for games they own the rights to. They suggest contacting the IP holder of games they developed but do not own (i.e., Activision for Spyro the Dragon and Sony for Resistance and Ratchet and Clank).
Example Games: Fuse, Outernauts, Sunset Overdrive.
Developer: Jackbox Games
Details: So far the only "official" statement I've seen from Jackbox Games on this is a response to a Steam Community question (sourced below). Keep in mind that with my experience with YouTube support, they do not consider social media, blogs, or message board statements as credible documentation for proving rights to monetize your videos. That said, I'm sure the developers will respond to you if you send them a message requesting permission. As of writing this, all my videos with Jackbox Games titles have been monetized with no issues.
Example Games: Clone Booth, Fibbage, The Jackbox Party Pack series, Quiplash, Word Puttz, The You Don't Know Jack series.
Publisher: Microsoft Studios
Details: Microsoft now enables monetization for their games following certain guidelines. The exception to this is Minecraft, which has it's own set of rules for Monetization (see below under "Mojang / 4J Studios").
Example games: The Halo series, the Fable series, Kinectimals, Kinect Adventures, Kinect Joy Ride, the Age of Empires series, the Flight Simulator series, Kameo, Perfect Dark Zero, Shadowrun, Viva Piñata.
Exceptions: Racing series like Forza Motorsport and Project Gotham Racing use brand cars that have their own trademark usage. The game Ori and the Blind Forest also seems to use copyright music that cannot be used for YouTube monetization. I have discovered this when uploading video gameplay of the game. I will be researching this more and will change this post if I find out anything new.
Developer: Mojang / 4J Studios (Specifically for Minecraft)
Details: You are allowed to monetize from Minecraft videos, but you have to follow certain criteria, such as not having "Minecraft" be the first and dominant subject title of your video.
Games: Minecraft (all versions)
Details: Previously, Nintendo has made conflicting statements in regards to their policy on YouTube videos, but it usually meant that you could not earn ad revenue with a YouTube partnership. Recently, Nintendo has opened a beta program for YouTubers to sign up and submit videos as part of a partnership program. You can sign up now for the program.
Example games: Current supported games list in the beta program
Details: Several posts from the developers on the Rocket League forums indicate they are fine with this, but you might want to contact them for official documentation if needed. So far, all my Rocket League videos are monetized without issue.
Source: None (search their forums).
Example Games: Rocket League
Developer: Square Enix
Details: From their usage policy page, "we don’t mind if you monetize via advertising through partner programs like YouTube.com, Twitch.tv, Ustream.tv, or similar video sharing services."
Example Games: The Final Fantasy series, the Tomb Raider series, the Kingdom Hearts series*, The Hitman series, Thief, Sleeping Dogs, Just Cause 2, and more.
*Be aware that this game might not have the same usage policy due to the fact that it is using licensed Disney characters.
Developer: SuperGiant Games
Details: SuperGiant allows monetization. They ask that you post links to purchase the game you're showcasing.
Example Games: Bastion, Transistor
Details: Team17 allows monetization. They ask that you post links to purchase the game you're showcasing.
Example Games: The Worms series, Superfrog HD, Alien Breed
Developer: Team Meat
Details: Edmund McMillen has stated publicly that he approves YouTube monetization for any game he works on it seems without any sort of requirements or restrictions, however it is not declared as an official statement anywhere on Team Meat's site or his personal blog. He has mentioned it at least a couple of times on his Spring.me account (which no longer exists) and I've seen him Tweet about it once or twice. The issue is that if YouTube requires more documentation, these statements are useless. It took many back-and-forths with YouTube support after they kept denying my video for them to finally say that they do not take statements on social networks into consideration and that you need a more official form of documentation. If that's the case for you, you might want to try contacting them directly for this but I'm guessing that if anything, they'll just send a link to Edmund's Spring.me post. In case you're wondering; I do not have my Super Meat Boy video monetized as a result of this.
Source: Edmund's Twitter
Example Games: Super Meat Boy
Developer: Tripwire Interactive
Details: Tripwire allows YouTube monetization.
Example Games: The Ball, Dwarfs?!, Killing Floor, the Red Orchestra series, Rising Storm, Zeno Clash
Details: Ubisoft, surprisingly, allows YouTube monetization for their games following some simple guidelines. Just be aware, I've sometimes had issues with YouTube support over this. From my experience if they give you any trouble, just follow and fill out anything they're asking of you in their inconsistent ever changing format with the same information from the source below and reiterating that you have the proper documentation provided. You can even provide a copy of the PDF as an additional attachment for further reiteration as proof just to get the point across. As of writing this, there still is one old Assassin's Creed video from my personal channel that has yet to be approved but is not a priority for me.
Example Games: The Assassin's Creed series, Watch Dogs, the Splinter Cell series, the Rayman series, and a lot more.
Developer: Valve Corporation
Details: Valve allows YouTube monetization for their games.
Example Games: Dota 2, Counter-Strike: Global Offensive, Counter-Strike: Source, Day of Defeat: Source, Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Left 4 Dead, Left 4 Dead 2, Portal, Portal 2, Team Fortress 2.
All developers that were in this list are now allowing YouTube monetization. If I run into any developers who are not, I will update this list.
Publisher: 2K Games, Inc.
Details: Being a subsidiary of Take-Two Interactive, 2K has the same video policy. Scroll down to "Rockstar Games / Take-Two Interactive" for more details.
Developer: The Fullbright Company
Details: The only source I've found regarding this is a Tweet in regards to the game Gone Home allowing use of the game for YouTube monetization. However, I have found that YouTube still claims copyright on music used in the game, so it is not usable for monetization unless you turn the music off. There is no clarification on this that I've found and I have no personal intention to clear this up with the developer at this time.
Example Games: Gone Home
Developer: High Moon Studios
Details: I honestly have not attempted to contact High Moon at all for the simple fact that the only game I've recorded gameplay of from them is Transformers: War for Cybertron and I am almost certain since it's a Hasbro property that they will probably say no. But feel free to contact them and let me know if you actually got any luck from them.
Details: By request, I've looked into this developer but have not found a definitive statement. You may have to contact the publisher for each individual case. I have no intention of researching further due to the fact that games are based around the Star Wars franchise which is owned by Disney, who also does not have a definitive statement on the subject but am almost certain that they will not approve of YouTube monetization (such as other Marvel and Disney games like Deadpool for High Moon Studios or Kingdom Hearts for Square Enix).
Developer/Publisher: Rockstar Games / Take-Two Interactive
Details: From their official statement on their site, it explicitly states "non-commercial" use is allowed. However, "non-commercial" in that context means "you don't sell site membership, or use the material to promote a product you sell on the site like a shirt or wallpaper". It does not give clear mention to monetization on YouTube's Partner program or information about ad placement. I have read conflicting information when researching this. Chances are, as long as you follow their guidelines for "non-commercial" use (which also forbids pre-release footage, ending game spoilers, cut-scenes that are not part of a larger commentary, and "in-game entertainment"), you should be fine but I have no solid confirmation on that. You can try contacting them for further clarification, as I may be doing so if YouTube asks me for more information once I have my GTA V videos uploaded.
UPDATE: I have since contacted Take-Two twice through the email address provided in the link below. I have yet to get a response.
UPDATE: I did try to email their support for a third time recently and still have not received a response. As of July 18th, 2015, I sent out a Tweet which received a response from Rockstar's Twitter support who reached out and offered to monitor the issue for me. With the link they provided me, I sent another email through a different form submission than is suggested on the support page listed below. I will update this section when I hear a response.
UPDATE: The response was to email their copyright support team (the same email in the following link), which I've tried to do three times in the past. This fourth time was no different, although I did receive an automated response telling me to await a follow-up email (which did not happen). I have read over their policy many times and have determined to interpret their stance on "non-commercial" use as anything that has a pay-wall to access content. As such, I don't believe pre-roll and banner ads are what they consider "commercial use", but have not been able to receive a response telling me otherwise. I have now enabled advertisements on all my GTA videos with a disclaimer in the description of each. If you have better luck reaching Rockstar or Take-Two Interactive about this, PLEASE LET ME KNOW!
Example Games: The Grand Theft Auto series, Red Dead Redemption.
Developer/Publisher: Sony Interactive Entertainment
Details: I have not yet found a definitive answer on this, however it does seem to be complicated. There are a vast number of development studios under SIE which may all follow their own individual policies which I may have to research further (such as Naughty Dog and Guerrilla Games). I've also seen instances of several notable Sony games getting copyright strikes from content creators through forum posts. Best to say for now that, if it is a Sony property, it is likely not allowed. But I would encourage contacting their support team in your case or letting me know if you have further information.
Developer: Undead Labs
Details: I have not found an official statement on the matter, but I have seen that others have contacted them about their game State of Decay in which they offered approval. The game is also published by Microsoft Studios so it should also fall in line with their YouTube policies. However, for my State of Decay video, I have been hit with a copyright ID notice because of the music used in the game. I have not attempted to contact the developer in regards to removing the copyright claim or in regards to monetization. If you have any results, let me know in the comments below!
Example Games: State of Decay