Deck: 40

Monsters: 20
Cosmo Queen x2
Mechanicalchaser x3
Ancient Gear Gadjiltron Dragon x2
Black Salvo x3
Breaker the Magical Warrior
Manju of the ten-thousand hands x3
Sangan
Senju of the Thousand Hand x2
Demise King of Armageddon x3

Spells: 19
Advance Ritual Arte
Allure of Darkness x2
End of the World x2
Geartown x3
Heavy Storm
Limiter Removal
Megamorph
Monster Reborn
Mystical Space Typhoon
Terraforming x3
Trade-In x3

Trap: 1
Mirror Force

Extra Deck: 15
Dark Strike Fighter x3
Black Rose Dragon x3
9 other synchros

I know this deck can be better

3x Terraforming is not needed.
Dekoichi is a Dark lvl 4 machine who can help you draw cards for the OTK and gives you more targets for Salvo.
Breaker doesn't do much here.
Crush Card is better than Mirror Force.
And Reckless Greed can help you draw for the OTK.

I'd say:
-2 Terraforming
-1 Breaker
-1 MST
-1 Mirror Force
+3 Reckless Greed
+1 Dekoichi
+1 Crush Card Virus


You can also use Magical Hats to bring out Gadjiton Dragons if you want, but I'm not sure if it would work in your build.

Sweet deck and nice video.

If you look at the cards it looks like you would get a bunch of dead draws.
But since the deck is so fast mayby that is not a problem.

A deck focused on Gear monsters and Demise? If you get Demise and have Geartown on the field, it'll activate it's effect to summon another gear. Hmmm....I'm guessing that's it? (Also, didn't watch the video since it's not loading for me for some reason. This is only a guess about your deck. Lol.)

I think magical hats effect will work with geartown
Just activate its effect, set geartown and at the end phase it will be destroyed and you can summon the dragon

yea, Magical Hats + Geartown = wonder, its just unnecessary in my OTK I guess