The Game Theory 10th Anniversary Celebration!

Get Your 10th Anniversary Game Theory Merch! ►
SUBSCRIBE for 10 more years of Theories! ►

Theorists, we are 10 YEARS old! In KGflow years, we are practically the grandparents of online Creators. I could not have done it without you, our amazing Theorist community. From watching our videos, buying merch, supporting our charity livestreams, and more - it has always been thanks to you that I get to do this for a living. That I got to hire a team to help me. So today's livestream is not just about me and the channel, it's about honoring my team, and honoring all the Theorists out there like you. Thank you.

Thanks to the creator and dev team for creating the GT10 game, as well as gathering clips for us to use during the livestream:
Julie // Redberryweo
Siem Sium
Caleb "Tatertot" Tate
Julianna "Peanut" Rios - Geeky Peanut
Nicholas "explosivepebble" Hunter
Victoria Ling - Spiritmoonz
Emanuele Braga - Rety
Michael Matthews - Gamma
Alexander Goldberg
Bianca - Coolart

The game will eventually be uploaded to this URL, so keep checking back for when it goes live to play it yourself! ►

Thank you to the other contributors:
Carf Darko
KillMonday Games - Natalia Martinsson
Jonochrome - Jonathan
Austin Hourigan / Host of The Science
Jeff / Mothe'rs Basement
Tyler Mascola
Dan Levitt
Susan Clark
Tim Ruswick
Snowconesolid Productions - Samer Khatib
Ryder Burgin
Josh Langman
Pedro Freitas
Forrest Lee
Yosi Berman
Alex Sedgwick
Atmos Games - Thomas Brush
AmberDrop - Martin
RandomEncounters - AJ
Moderator - Deborah
SodaDrinkerPro - Will Brierly
St. Jude - Susan Clark & ALSAC team
Micheal Sundman (Gaijin Goomba)
Mark Fischbach (Markiplier)
Arin Hanson & Dan Avidan (Game Grumps)
Scott Cawthon
Reggie Fils Aime
BasicallyGames, dev of Baldi's Basics

Thank you to our special guests from Team Theorist for joining us on today's livestream:
Jason Parker
Dan "Cybert" Seibert / That Cybert Channel
Amy Roberts / Amariebythesea
Chris Widin

We'd also like to thank all of our community mods over on Reddit ►
Serah Cocoa

Become a well rounded Theorists and check out our other channels!
Film Theory! ►
Food Theory! ►

жүктөп алуу



  • Why not make a list of movies you have watched since your tenth anniversary minus restricted ones?

    Jose Sual CuevasJose Sual Cuevas2 күн мурун
  • You are my favorite KGflow and every time I'm sad or upset your the one who cheers me up and when I'm in bad times you help me through it,you give me lots of courage and make me laugh so hard I cry and I could not stop crying when I seen this and congrats mat and Stephanie happy birthday haha😊😊😊

    Xavah lamaXavah lama3 күн мурун
  • Video 18 of posting about otamatone lore

    MolnskugganMolnskuggan4 күн мурун
  • you do give me happy and joy

    It’s AbbycasIt’s Abbycas11 күн мурун

    boblockboblock16 күн мурун

    boblockboblock16 күн мурун
  • 10 years of kido generic games

    Jon L.Jon L.17 күн мурун
  • For those wondering the song MatPat is talking about at 3:38:45 is Nonstop where everyone is basically commenting on Hamilton by saying 'Why do you write like you're running out of time, why do you write like you need to survive?'. It's one of my personal favorites and I highly encourage listening to it for context.

    Tristan TadsenTristan Tadsen20 күн мурун
  • ugh, I'm crying x') and Ollie and steph are theeere

    Aigneis AidenAigneis Aiden20 күн мурун
  • Only OG fans remember when MatPat thought he was done with the FNaF lore.

    Gabe Ye LadGabe Ye Lad23 күн мурун
  • Congratulations

    Jhakobi • 57 years agoJhakobi • 57 years ago26 күн мурун
  • Oh yeah. Let's go

    beargreen1beargreen1Ай мурун
  • Thank you, Team Theorist, for everything. Really, truly, this channel has felt like a friend in the midst of all the craziness; just watching you guys on the couch playing games has been a blessed distraction, a comfort through some awful times. Thank you, thank you, thank you, a million times over.

    Frances GreenFrances GreenАй мурун
  • MatPat never gave us up, he never let us down, he never ran around and deserted us, he never made us cry, and he never said goodbye.

    MikeyMotion StoriesMikeyMotion StoriesАй мурун
  • I started crying at 3:28:40 It's just too much good memories for me with this channel

    Talerz _157Talerz _157Ай мурун
  • Good joob MatPat but 1 thing i got an add at the start of the vid. It was a movie with you AND you had a beard

    Kermit ProductionsKermit ProductionsАй мурун
  • Wait why is Steph not going to be on the lives anymore?

    Tamaki Amajiki - SuneaterTamaki Amajiki - SuneaterАй мурун
    • Yeah.....

      Asiel CastilloAsiel Castillo23 күн мурун

    cherryfrogg1e-!cherryfrogg1e-!Ай мурун
  • Can’t wait for the 30 year anniversary 🥳🎉

    Mango cocoMango cocoАй мурун
  • For anyone wondering when it starts its here: 4:23

    Soapy2020 OfficialSoapy2020 OfficialАй мурун
  • Congratulations ! Our favorite channel :)

    زهراء محمد عباسزهراء محمد عباسАй мурун

    Vinnolan RamsamyVinnolan RamsamyАй мурун
  • look mat iv been watching for 10 years and im so happy your life got better so bye matt

    Class 422Class 422Ай мурун
  • like I couldn't be there when it started lol I was 2 years old and same Jason the birthdays are the same

    Kevin LehmanKevin LehmanАй мурун
  • Start at 4:21

    TheNinthGenerationTheNinthGenerationАй мурун
  • Wh@ever happened 2 “Game Lab”?

    Nerd #D137.Nerd #D137.Ай мурун
  • R.I.P, Ronnie.

    Nerd #D137.Nerd #D137.Ай мурун
  • it’s so amazing to me that matpat grew from this awkward theater dude with basic and bare-bones videos to married with a kid and making absolutely stellar videos but for 3 channels (4 if you count GT live but that’s not theories). happy ten years, dude. whatever happens now, whenever you stop making these, know that you’ve touched my life among millions of others for a decade with your brilliant mind and unique humor.

    kermy’s meme dungeonkermy’s meme dungeonАй мурун
  • This came out before delteruen chapter 2 and ddlc 2

    Sir snom Gaming studioSir snom Gaming studioАй мурун

    CyberKnight465CyberKnight465Ай мурун

    The Glowing ViperThe Glowing ViperАй мурун
  • Good Gawd, you need a vacation. L.O.L.s 4 days.

    Nerd #D137.Nerd #D137.Ай мурун
  • Congratulations!!!! (Seriously though, happy 10th anniversary).

    Nerd #D137.Nerd #D137.Ай мурун
  • Congrats!

    Nerd #D137.Nerd #D137.Ай мурун
  • You are so great, keep on going.

    Marius DittrichMarius Dittrich2 ай мурун
  • These tears are hurting and lifting my soul 😭😭

    Jasmine WilliamsJasmine Williams2 ай мурун
  • I was SO into that Ninja edit story, I'm so sad it cut out 😭

    Jasmine WilliamsJasmine Williams2 ай мурун
  • I want the deadlock episodes back so bad 😭😭 I loved them to pieces. That sucks that it was so difficult for them.

    Jasmine WilliamsJasmine Williams2 ай мурун
  • It's awesome seeing the team together just basking in the glory of the last decade. You guys deserve all your subs and clout!

    TheAdvertisementTheAdvertisement2 ай мурун
  • @mamapho

    Thabang NkopaneThabang Nkopane2 ай мурун

    Azba BhureAzba Bhure2 ай мурун
  • I feel...old

    JamesoonJamesoon2 ай мурун
  • 53:41 Ignore this, it's just a time stamp for me, myself, and I

    B R E A DB R E A D2 ай мурун
  • Game Over Thanks For Playing

    deleteddeleted2 ай мурун
  • SHAME ON YOU MR OVER WATCH+ congratulations

    Carlffler AzizCarlffler Aziz2 ай мурун
  • First SMG4’s 10 YEAR ANNIVERSARY of memes and adventures with our favorite idiotic pal Mario and now this. Happy 1 Decade to you both ^^

    Mystic The Male UnicornMystic The Male Unicorn2 ай мурун
  • can't say I'm still a fan but i remember watching this guy back in the 5th/6th grade

    cameron salehizadehcameron salehizadeh2 ай мурун
  • I love you guys!!! Even though the videos were stupid(in a funny way), they helped me learn a lot of things over the years, and being the person I am, it's really hard for me to process the info but the visuals & execution of the videos (thanks to the editors) helped me understand. All and all, you guys are all just the best! :D

    Purple IrkenPurple Irken2 ай мурун
  • Can't wait for the 20th Anniversary.

    Mr. UnknownMr. Unknown2 ай мурун
  • I love that they paused to give Ollie love and attention

    Ann NAnn N2 ай мурун
  • Ollie 😍😭😍

    Ann NAnn N2 ай мурун
  • I have so much admiration for team theorists

    Ann NAnn N2 ай мурун

    William PowellWilliam Powell2 ай мурун
  • This remind me of SMG 410 year anniversary

    Jeremiah BondJeremiah Bond2 ай мурун
  • But that's just a theory.

    RayTracedAudioRayTracedAudio2 ай мурун
  • and happy 10th year!!!

    Sam PiccoloSam Piccolo2 ай мурун
  • can you do theory on the v.r game fisherman's tale I love it

    Sam PiccoloSam Piccolo2 ай мурун
  • Hell's bell's, I was just getting into friggin' college when he started this! I can't even comprehend that very well.

    Zach LongZach Long2 ай мурун
  • Didn't get a chance to watch this till now... 😔 Happy late anniversary still everyone! 🥳

    Harrison WalkerHarrison Walker2 ай мурун
  • Can always count on Chris to bring something from way out in left field and quadruplicate an entertainment factor that you already thought was beyond maxed out and more than entertaining then you can possibly handle.

    The1stGiant GamingThe1stGiant Gaming2 ай мурун
  • i788

    Jayden StilwellJayden Stilwell2 ай мурун
  • Happy late anniversary

    Micah Kirk- Games and drawingsMicah Kirk- Games and drawings2 ай мурун
  • Don’t be sad

    Keyla SandovalKeyla Sandoval2 ай мурун
    • By the way I’m 10 almost 11 so I’m a year bigger than film theory

      Keyla SandovalKeyla Sandoval2 ай мурун
    • You should be happy to your 10 year anniversary

      Keyla SandovalKeyla Sandoval2 ай мурун
  • "We've got a lot of pizza, which I feel too sick to eat" Yeah me too MatPat.

    Duz_Machines _84Duz_Machines _842 ай мурун
  • sheeeeeeesh

    freamyfreamy2 ай мурун
  • who would dislike this?

    Azrael2018Azrael20182 ай мурун
    • Undertale Fans,i hate Undertale.

      Mr. UnknownMr. Unknown2 ай мурун
  • Who else cried durning the song cause that was beautiful

    Emo NerdEmo Nerd2 ай мурун
  • 10 years on ruining childhoods! Yayyyyy!

    Marcela XDMarcela XD2 ай мурун
  • latepat

    Fiona SkallerudFiona Skallerud2 ай мурун
  • Just telling you fnaf has a cartoon it is called fazbear and friends

    Strawberry girl 2028Strawberry girl 20282 ай мурун
    • Sorry 😞 for wasting your time it’s just a kids cartoon it can’t help you with your dark throes of fnaf

      Strawberry girl 2028Strawberry girl 20282 ай мурун
  • Congratulations! 🥳🤧🤧🤧

    Antonia MooreAntonia Moore2 ай мурун
  • as old as me

    Laura AtwoodLaura Atwood2 ай мурун
  • im 9 and this channel is older than me my bday is july 4 th ngl not lyin But thats just a theory, a game theory!

    PranavPranav2 ай мурун
  • Technically you're 12 if you go to about you joined in August 2009

    JoeyBookJoeyBook2 ай мурун
    • He probably didn’t make videos or streams on this channel till 10 years ago

      Fnaf fusionFnaf fusion2 ай мурун
  • I always know how important Game Theory was to me, ever since I found it more than 9 years ago. But I had to admit I wasn't expecting to end up crying more than Matthew did in this video. This has really made me happy. I really look forward to some GTLives where they actually play more of this amazing game.

    Rajvir Daniel SinghRajvir Daniel Singh2 ай мурун
  • Happy 10th birthday to this channel and lots of hugs and love to everyone in this community! Let's have another nice 10 years together!

    Ambre DragonneAmbre Dragonne2 ай мурун
  • Sheesh subscribed since 2015 rember fnaf Siri’s

    Spidergamer09Spidergamer092 ай мурун
  • happy 10

    Ernie GErnie G2 ай мурун
  • game theory really deserved to go on for 10, and I hope it goes on for 10 more.

    My_ChanelMy_Chanel2 ай мурун

    Munkh-yalalt ChinbatMunkh-yalalt Chinbat2 ай мурун
    • Happy late birthday!

      glittery_cucumberglittery_cucumber2 ай мурун
  • Im rewatching at the 3 1/2 hour mark and Im in tears

    The Hungry HufflepuffThe Hungry Hufflepuff2 ай мурун
  • It's odd. I used to really love GT. I even tried to learn the theme on violin at one point. But my interest in GT dwindled out sometime in late 2016; it was either the content of the times not interesting me enough or just growing up. & Yet I still routinely checked out what the channels were up to from time to time. I watched stream archives, waited in vain for DeadLock to return, & mourned over the loss of Ronnie "Oni" Edwards. I may not be as invested in the community as I used to be, but I am glad that I had those early GT memories & that the channels continue to provide such for others. Happy 10th, Matpat.

    AnonymousGuyAnonymousGuy2 ай мурун
  • WAIT!!! WHAT?!?!? LUKE IS LIKE A KGflow RELIC!!!!! I had no idea you guys worked with him!!!!! Used to love Barats and Bareta!!!!!

    B. LeeB. Lee2 ай мурун
  • so, they have done theroy on fnaf lore, unnas anus lore, markiplier lore, when do we get gt lore?

    The ClaimedThe Claimed2 ай мурун
  • I've never liked Austin more than that clip of him going off 🤣🤣🤣

    B. LeeB. Lee2 ай мурун
  • We love you Matt

    Logan BaumanLogan Bauman2 ай мурун
  • I remember watching this in my moms tv with my brother times pass so fast that channels like this already have ten years

    Hi I am CebollaHi I am Cebolla2 ай мурун
  • People who are watching this comment I wish there parent's still alive for more than 💯 years god bless U &UR family 😭😭❤️❤️

    Shubham Music EntertainmentShubham Music Entertainment2 ай мурун
  • Why is Ollie's Hair so blond when both of his parent are darker haired?

    Cole RosenbaumCole Rosenbaum2 ай мурун
    • Genetics (blonde grandparents etc), plus lots of kids have light hair and it gets darker as they grow up

      glittery_cucumberglittery_cucumber2 ай мурун
  • wow theres a lot of 10 year anniversary on youtube

    Mr. StripesMr. Stripes2 ай мурун
  • Here’s to 10 years

    Robert MauldinRobert Mauldin2 ай мурун
  • 3:24:19 you started to go into a stitch voice from lilo and stitch 😂

    the helper of gamesthe helper of games2 ай мурун
  • Omg

    Jeremy TempleJeremy Temple2 ай мурун
  • I'm as old as the chanel

    HecaterisHecateris2 ай мурун
  • The meme and fanart rooms should’ve been one of those non Euclidean ones where you can go round in the same circle over and over and yet it’s different every time

    Daniel RobertsDaniel Roberts2 ай мурун
  • Song at the end is an absolute banger

    Hayden WatsonHayden Watson2 ай мурун
  • Can't believe Mat and Steph have been at this for half of my lifetime. Such a blessing, thank you for all you've done.

    Lauren PaigeLauren Paige2 ай мурун
  • Ollie hijacking the stream was truly iconic. Happy 10 years, Game Theory!

    Paolo MiyashiroPaolo Miyashiro2 ай мурун
  • I would die for Ollie

    PrancingdeerPrancingdeer2 ай мурун
  • Did I watched the entire 4 hours of stream? yes... Did I cry? Of course! Did I had a point on writting this comment? Not so much... Happy anniverysary!

    Pedro FernándezPedro Fernández2 ай мурун