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 SLthrow 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 \u0026 ALSAC team
Micheal Sundman (Gaijin Goomba)
Mark Fischbach (Markiplier)
Arin Hanson \u0026 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! ►


  1. MikeyMotion Stories

    MikeyMotion StoriesPred dnevom

    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.

  2. Talerz _157

    Talerz _157Pred 3 dnevi

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

  3. Kermit Productions

    Kermit ProductionsPred 4 dnevi

    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

  4. Tamaki Amajiki - Suneater

    Tamaki Amajiki - SuneaterPred 8 dnevi

    Wait why is Steph not going to be on the lives anymore?

  5. cat lover

    cat loverPred 9 dnevi


  6. cherryfrogg1e-!

    cherryfrogg1e-!Pred 9 dnevi


  7. Mango coco

    Mango cocoPred 10 dnevi

    Can’t wait for the 30 year anniversary 🥳🎉

  8. Soapy2020 Official

    Soapy2020 OfficialPred 10 dnevi

    For anyone wondering when it starts its here: 4:23

  9. زهراء محمد عباس

    زهراء محمد عباسPred 11 dnevi

    Congratulations ! Our favorite channel :)

  10. Vinnolan Ramsamy

    Vinnolan RamsamyPred 12 dnevi


  11. Class 422

    Class 422Pred 13 dnevi

    look mat iv been watching for 10 years and im so happy your life got better so bye matt

  12. Kevin Lehman

    Kevin LehmanPred 15 dnevi

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

  13. TheNinthGeneration

    TheNinthGenerationPred 15 dnevi

    Start at 4:21

  14. Nerd_ #4,137.

    Nerd_ #4,137.Pred 16 dnevi

    Wh@ever happened 2 “Game Lab”?

  15. Nerd_ #4,137.

    Nerd_ #4,137.Pred 16 dnevi

    R.I.P, Ronnie.

  16. kermy’s meme dungeon

    kermy’s meme dungeonPred 17 dnevi

    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.

  17. Sir snom Gaming studio

    Sir snom Gaming studioPred 18 dnevi

    This came out before delteruen chapter 2 and ddlc 2

  18. CyberKnight465

    CyberKnight465Pred 19 dnevi


  19. The Glowing Viper

    The Glowing ViperPred 19 dnevi


  20. Nerd_ #4,137.

    Nerd_ #4,137.Pred 20 dnevi

    Good Gawd, you need a vacation. L.O.L.s 4 days.

  21. Nerd_ #4,137.

    Nerd_ #4,137.Pred 20 dnevi

    Congratulations!!!! (Seriously though, happy 10th anniversary).

  22. Nerd_ #4,137.

    Nerd_ #4,137.Pred 20 dnevi


  23. Marius Dittrich

    Marius DittrichPred 22 dnevi

    You are so great, keep on going.

  24. Jasmine Williams

    Jasmine WilliamsPred 23 dnevi

    These tears are hurting and lifting my soul 😭😭

  25. Jasmine Williams

    Jasmine WilliamsPred 23 dnevi

    I was SO into that Ninja edit story, I'm so sad it cut out 😭

  26. Jasmine Williams

    Jasmine WilliamsPred 23 dnevi

    I want the deadlock episodes back so bad 😭😭 I loved them to pieces. That sucks that it was so difficult for them.

  27. TheAdvertisement

    TheAdvertisementPred 23 dnevi

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

  28. Thabang Nkopane

    Thabang NkopanePred 23 dnevi


  29. Azba Bhure

    Azba BhurePred 24 dnevi


  30. Jamesoon

    JamesoonPred 24 dnevi

    I feel...old

  31. B R E A D

    B R E A DPred 24 dnevi

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

  32. Deleted

    DeletedPred 24 dnevi

    Game Over Thanks For Playing

  33. Carlffler Aziz

    Carlffler AzizPred 25 dnevi

    SHAME ON YOU MR OVER WATCH+ congratulations

  34. Nick Bacon

    Nick BaconPred 27 dnevi

    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 ^^

  35. cameron salehizadeh

    cameron salehizadehPred 27 dnevi

    can't say I'm still a fan but i remember watching this guy back in the 5th/6th grade

  36. Purple Irken

    Purple IrkenPred 27 dnevi

    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

  37. Mr. Unknown

    Mr. UnknownPred 27 dnevi

    Can't wait for the 20th Anniversary.

  38. Ann N

    Ann NPred 28 dnevi

    I love that they paused to give Ollie love and attention

  39. Ann N

    Ann NPred 28 dnevi

    Ollie 😍😭😍

  40. Ann N

    Ann NPred 28 dnevi

    I have so much admiration for team theorists

  41. William Powell

    William PowellPred 28 dnevi


  42. Jeremiah Bond

    Jeremiah BondPred 29 dnevi

    This remind me of SMG 410 year anniversary

  43. RayTracedAudio

    RayTracedAudioPred 29 dnevi

    But that's just a theory.

  44. Sam Piccolo

    Sam PiccoloPred mesecem

    and happy 10th year!!!

  45. Sam Piccolo

    Sam PiccoloPred mesecem

    can you do theory on the v.r game fisherman's tale I love it

  46. Zach Long

    Zach LongPred mesecem

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

  47. Harrison Walker

    Harrison WalkerPred mesecem

    Didn't get a chance to watch this till now... 😔 Happy late anniversary still everyone! 🥳

  48. The1stGiant Gaming

    The1stGiant GamingPred mesecem

    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.

  49. Jayden Stilwell

    Jayden StilwellPred mesecem


  50. Micah Kirk- Games and drawings

    Micah Kirk- Games and drawingsPred mesecem

    Happy late anniversary

  51. Keyla Sandoval

    Keyla SandovalPred mesecem

    Don’t be sad

  52. Keyla Sandoval

    Keyla SandovalPred mesecem

    By the way I’m 10 almost 11 so I’m a year bigger than film theory

  53. Keyla Sandoval

    Keyla SandovalPred mesecem

    You should be happy to your 10 year anniversary

  54. Duz_Machines _84

    Duz_Machines _84Pred mesecem

    "We've got a lot of pizza, which I feel too sick to eat" Yeah me too MatPat.

  55. reactory gaming

    reactory gamingPred mesecem


  56. Azrael2018

    Azrael2018Pred mesecem

    who would dislike this?

  57. Mr. Unknown

    Mr. UnknownPred 27 dnevi

    Undertale Fans,i hate Undertale.

  58. Emo Nerd

    Emo NerdPred mesecem

    Who else cried durning the song cause that was beautiful

  59. Marcela XD

    Marcela XDPred mesecem

    10 years on ruining childhoods! Yayyyyy!

  60. Fiona Skallerud

    Fiona SkallerudPred mesecem


  61. Popsicle girl 2028

    Popsicle girl 2028Pred mesecem

    Just telling you fnaf has a cartoon it is called fazbear and friends

  62. Popsicle girl 2028

    Popsicle girl 2028Pred mesecem

    Sorry 😞 for wasting your time it’s just a kids cartoon it can’t help you with your dark throes of fnaf

  63. Antonia Moore

    Antonia MoorePred mesecem

    Congratulations! 🥳🤧🤧🤧

  64. Laura Atwood

    Laura AtwoodPred mesecem

    as old as me

  65. Pranav

    PranavPred mesecem

    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!

  66. JoeyBook

    JoeyBookPred mesecem

    Technically you're 12 if you go to about you joined in August 2009

  67. Fnaf fusion

    Fnaf fusionPred mesecem

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

  68. Rajvir Daniel Singh

    Rajvir Daniel SinghPred mesecem

    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.

  69. Ambre Dragonne

    Ambre DragonnePred mesecem

    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!

  70. Hassan Alrafai

    Hassan AlrafaiPred mesecem

    Sheesh subscribed since 2015 rember fnaf Siri’s

  71. Ernie G

    Ernie GPred mesecem

    happy 10

  72. My_Chanel

    My_ChanelPred mesecem

    game theory really deserved to go on for 10, and I hope it goes on for 10 more.

  73. Munkh-yalalt Chinbat

    Munkh-yalalt ChinbatPred mesecem


  74. glittery_cucumber

    glittery_cucumberPred mesecem

    Happy late birthday!

  75. The Hungry Hufflepuff

    The Hungry HufflepuffPred mesecem

    Im rewatching at the 3 1/2 hour mark and Im in tears

  76. AnonymousGuy

    AnonymousGuyPred mesecem

    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.

  77. B. Lee

    B. LeePred mesecem

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

  78. The Claimed

    The ClaimedPred mesecem

    so, they have done theroy on fnaf lore, unnas anus lore, markiplier lore, when do we get gt lore?

  79. B. Lee

    B. LeePred mesecem

    I've never liked Austin more than that clip of him going off 🤣🤣🤣

  80. Logan Bauman

    Logan BaumanPred mesecem

    We love you Matt

  81. Hi I am Cebolla

    Hi I am CebollaPred mesecem

    I remember watching this in my moms tv with my brother times pass so fast that channels like this already have ten years

  82. Shubham Music Entertainment

    Shubham Music EntertainmentPred mesecem

    People who are watching this comment I wish there parent's still alive for more than 💯 years god bless U &UR family 😭😭❤️❤️

  83. Cole Rosenbaum

    Cole RosenbaumPred mesecem

    Why is Ollie's Hair so blond when both of his parent are darker haired?

  84. glittery_cucumber

    glittery_cucumberPred mesecem

    Genetics (blonde grandparents etc), plus lots of kids have light hair and it gets darker as they grow up

  85. Mr. Stripes

    Mr. StripesPred mesecem

    wow theres a lot of 10 year anniversary on youtube

  86. Robert Mauldin

    Robert MauldinPred mesecem

    Here’s to 10 years

  87. the helper of games

    the helper of gamesPred mesecem

    3:24:19 you started to go into a stitch voice from lilo and stitch 😂

  88. Jeremy Temple

    Jeremy TemplePred mesecem


  89. Hecateris

    HecaterisPred mesecem

    I'm as old as the chanel

  90. Daniel Roberts

    Daniel RobertsPred mesecem

    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

  91. Hayden Watson

    Hayden WatsonPred mesecem

    Song at the end is an absolute banger

  92. Lauren Paige

    Lauren PaigePred mesecem

    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.

  93. Paolo Miyashiro

    Paolo MiyashiroPred mesecem

    Ollie hijacking the stream was truly iconic. Happy 10 years, Game Theory!

  94. Prancingdeer

    PrancingdeerPred mesecem

    I would die for Ollie

  95. Pedro Fernández

    Pedro FernándezPred mesecem

    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!

  96. Doin Daworst

    Doin DaworstPred mesecem

    Please Help! Sir! Please look into DST (Don’t Starve Together) So much more lore than Minecraft but also obscure and interesting! A casual no worries experience!

  97. Black PM

    Black PMPred mesecem

    Congrats mat

  98. Luqman and u

    Luqman and uPred mesecem


  99. Margaret Phillips

    Margaret PhillipsPred mesecem


  100. Momento Mori

    Momento MoriPred mesecem

    MATPAT FOR JEOPARDY HOST!!!!! Seriously tho, he’s be really good at it

  101. micky streit

    micky streitPred mesecem

    I love when team theorist hangs out they're such a fun combo!

  102. Miranda Ntumngia

    Miranda NtumngiaPred mesecem

    Matpat, your first video is: blood brothers (scence): swearing on the bible. Why haven't you talked about that?

  103. aqr𝗼x

    aqr𝗼xPred mesecem


  104. Ꭱite

    ᎡitePred mesecem


  105. Adventurer Leader

    Adventurer LeaderPred mesecem

    Can you make a theory about this why are six’s and Monos name number six=6 mono=1 is a new character 61 or 16?

  106. Shayaan Morshed

    Shayaan MorshedPred mesecem

    Happy 10th. Sorry I missed the stream.

  107. Lioness94

    Lioness94Pred mesecem

    Let’s be real- fNaf would probably still be small if fans hadn’t picked fNaf instead of slenderman....