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 FItop 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. Tamaki Amajiki - Suneater

    Tamaki Amajiki - Suneater

    3 päivää sitten

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

  2. cat lover

    cat lover

    4 päivää sitten


  3. cherryfrogg1e-!


    4 päivää sitten


  4. Mango coco

    Mango coco

    5 päivää sitten

    Can’t wait for the 30 year anniversary 🥳🎉

  5. Soapy2020 Official

    Soapy2020 Official

    5 päivää sitten

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

  6. زهراء محمد عباس

    زهراء محمد عباس

    6 päivää sitten

    Congratulations ! Our favorite channel :)

  7. Vinnolan Ramsamy

    Vinnolan Ramsamy

    8 päivää sitten


  8. Class 422

    Class 422

    8 päivää sitten

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

  9. Kevin Lehman

    Kevin Lehman

    10 päivää sitten

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

  10. TheNinthGeneration


    10 päivää sitten

    Start at 4:21

  11. Nerd_ #4,137.

    Nerd_ #4,137.

    11 päivää sitten

    Wh@ever happened 2 “Game Lab”?

  12. Nerd_ #4,137.

    Nerd_ #4,137.

    11 päivää sitten

    R.I.P, Ronnie.

  13. kermy’s meme dungeon

    kermy’s meme dungeon

    13 päivää sitten

    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.

  14. Sir snom Gaming studio

    Sir snom Gaming studio

    13 päivää sitten

    This came out before delteruen chapter 2 and ddlc 2

  15. CyberKnight465


    14 päivää sitten


  16. The Glowing Viper

    The Glowing Viper

    14 päivää sitten


  17. Nerd_ #4,137.

    Nerd_ #4,137.

    15 päivää sitten

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

  18. Nerd_ #4,137.

    Nerd_ #4,137.

    15 päivää sitten

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

  19. Nerd_ #4,137.

    Nerd_ #4,137.

    15 päivää sitten


  20. Marius Dittrich

    Marius Dittrich

    17 päivää sitten

    You are so great, keep on going.

  21. Jasmine Williams

    Jasmine Williams

    18 päivää sitten

    These tears are hurting and lifting my soul 😭😭

  22. Jasmine Williams

    Jasmine Williams

    18 päivää sitten

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

  23. Jasmine Williams

    Jasmine Williams

    18 päivää sitten

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

  24. TheAdvertisement


    18 päivää sitten

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

  25. Thabang Nkopane

    Thabang Nkopane

    18 päivää sitten


  26. Azba Bhure

    Azba Bhure

    19 päivää sitten


  27. Jamesoon


    19 päivää sitten

    I feel...old

  28. B R E A D

    B R E A D

    19 päivää sitten

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

  29. Deleted


    19 päivää sitten

    Game Over Thanks For Playing

  30. Carlffler Aziz

    Carlffler Aziz

    20 päivää sitten

    SHAME ON YOU MR OVER WATCH+ congratulations

  31. Nick Bacon

    Nick Bacon

    22 päivää sitten

    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 ^^

  32. cameron salehizadeh

    cameron salehizadeh

    22 päivää sitten

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

  33. Purple Irken

    Purple Irken

    22 päivää sitten

    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

  34. Mr. Unknown

    Mr. Unknown

    22 päivää sitten

    Can't wait for the 20th Anniversary.

  35. Ann N (TheReadingSiren_)

    Ann N (TheReadingSiren_)

    23 päivää sitten

    I love that they paused to give Ollie love and attention

  36. Ann N (TheReadingSiren_)

    Ann N (TheReadingSiren_)

    23 päivää sitten

    Ollie 😍😭😍

  37. Ann N (TheReadingSiren_)

    Ann N (TheReadingSiren_)

    23 päivää sitten

    I have so much admiration for team theorists

  38. William Powell

    William Powell

    23 päivää sitten


  39. Jeremiah Bond

    Jeremiah Bond

    24 päivää sitten

    This remind me of SMG 410 year anniversary

  40. RayTracedAudio


    24 päivää sitten

    But that's just a theory.

  41. Sam Piccolo

    Sam Piccolo

    25 päivää sitten

    and happy 10th year!!!

  42. Sam Piccolo

    Sam Piccolo

    25 päivää sitten

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

  43. Zach Long

    Zach Long

    26 päivää sitten

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

  44. Harrison Walker

    Harrison Walker

    27 päivää sitten

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

  45. The1stGiant Gaming

    The1stGiant Gaming

    Uukausi sitten

    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.

  46. Jayden Stilwell

    Jayden Stilwell

    Uukausi sitten


  47. Micah Kirk- Games and drawings

    Micah Kirk- Games and drawings

    Uukausi sitten

    Happy late anniversary

  48. Keyla Sandoval

    Keyla Sandoval

    Uukausi sitten

    Don’t be sad

    • Keyla Sandoval

      Keyla Sandoval

      Uukausi sitten

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

    • Keyla Sandoval

      Keyla Sandoval

      Uukausi sitten

      You should be happy to your 10 year anniversary

  49. Duz_Machines _84

    Duz_Machines _84

    Uukausi sitten

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

  50. reactory gaming

    reactory gaming

    Uukausi sitten


  51. Azrael2018


    Uukausi sitten

    who would dislike this?

    • Mr. Unknown

      Mr. Unknown

      22 päivää sitten

      Undertale Fans,i hate Undertale.

  52. Emo Nerd

    Emo Nerd

    Uukausi sitten

    Who else cried durning the song cause that was beautiful

  53. Marcela XD

    Marcela XD

    Uukausi sitten

    10 years on ruining childhoods! Yayyyyy!

  54. Fiona Skallerud

    Fiona Skallerud

    Uukausi sitten


  55. Popsicle girl 2028

    Popsicle girl 2028

    Uukausi sitten

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

    • Popsicle girl 2028

      Popsicle girl 2028

      Uukausi sitten

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

  56. Antonia Moore

    Antonia Moore

    Uukausi sitten

    Congratulations! 🥳🤧🤧🤧

  57. Laura Atwood

    Laura Atwood

    Uukausi sitten

    as old as me

  58. Pranav


    Uukausi sitten

    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!

  59. JoeyBook


    Uukausi sitten

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

    • Fnaf fusion

      Fnaf fusion

      Uukausi sitten

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

  60. Rajvir Daniel Singh

    Rajvir Daniel Singh

    Uukausi sitten

    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.

  61. Ambre Dragonne

    Ambre Dragonne

    Uukausi sitten

    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!

  62. Hassan Alrafai

    Hassan Alrafai

    Uukausi sitten

    Sheesh subscribed since 2015 rember fnaf Siri’s

  63. Ernie G

    Ernie G

    Uukausi sitten

    happy 10

  64. My_Chanel


    Uukausi sitten

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

  65. Munkh-yalalt Chinbat

    Munkh-yalalt Chinbat

    Uukausi sitten


    • glittery_cucumber


      Uukausi sitten

      Happy late birthday!

  66. The Hungry Hufflepuff

    The Hungry Hufflepuff

    Uukausi sitten

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

  67. AnonymousGuy


    Uukausi sitten

    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.

  68. B. Lee

    B. Lee

    Uukausi sitten

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

  69. The Claimed

    The Claimed

    Uukausi sitten

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

  70. B. Lee

    B. Lee

    Uukausi sitten

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

  71. Logan Bauman

    Logan Bauman

    Uukausi sitten

    We love you Matt

  72. Hi I am Cebolla

    Hi I am Cebolla

    Uukausi sitten

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

  73. Shubham Music Entertainment

    Shubham Music Entertainment

    Uukausi sitten

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

  74. Cole Rosenbaum

    Cole Rosenbaum

    Uukausi sitten

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

    • glittery_cucumber


      Uukausi sitten

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

  75. Mr. Stripes

    Mr. Stripes

    Uukausi sitten

    wow theres a lot of 10 year anniversary on youtube

  76. Robert Mauldin

    Robert Mauldin

    Uukausi sitten

    Here’s to 10 years

  77. the helper of games

    the helper of games

    Uukausi sitten

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

  78. Jeremy Temple

    Jeremy Temple

    Uukausi sitten


  79. Hecateris


    Uukausi sitten

    I'm as old as the chanel

  80. Daniel Roberts

    Daniel Roberts

    Uukausi sitten

    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

  81. Hayden Watson

    Hayden Watson

    Uukausi sitten

    Song at the end is an absolute banger

  82. Lauren Paige

    Lauren Paige

    Uukausi sitten

    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.

  83. Paolo Miyashiro

    Paolo Miyashiro

    Uukausi sitten

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

  84. Prancingdeer


    Uukausi sitten

    I would die for Ollie

  85. Pedro Fernández

    Pedro Fernández

    Uukausi sitten

    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!

  86. Doin Daworst

    Doin Daworst

    Uukausi sitten

    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!

  87. Black PM

    Black PM

    Uukausi sitten

    Congrats mat

  88. Luqman and u

    Luqman and u

    Uukausi sitten


  89. Margaret Phillips

    Margaret Phillips

    Uukausi sitten


  90. Momento Mori

    Momento Mori

    Uukausi sitten

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

  91. micky streit

    micky streit

    Uukausi sitten

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

  92. Miranda Ntumngia

    Miranda Ntumngia

    Uukausi sitten

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

  93. aqr𝗼x


    Uukausi sitten


  94. Ꭱite


    Uukausi sitten


  95. Siddhanta Pathak

    Siddhanta Pathak

    Uukausi sitten

    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?

  96. Shayaan Morshed

    Shayaan Morshed

    Uukausi sitten

    Happy 10th. Sorry I missed the stream.

  97. Lioness94


    Uukausi sitten

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

  98. peter griffin

    peter griffin

    Uukausi sitten

    26:56 lmao bottom left

  99. Owen Harder

    Owen Harder

    Uukausi sitten

    Great video

  100. rꪖꪀᦔꪮꪑ ρꫀrsꪮꪀ

    rꪖꪀᦔꪮꪑ ρꫀrsꪮꪀ

    Uukausi sitten

    MatPat, you deserve a pat-pat for making all these theories for 10 years.