Learn how and why to build Extensions on Twitch. Extensions are interactive video player overlays and panels that can be installed directly on the channel page by broadcasters.

1. Accelerating Development of Twitch
Extensions for Your Game

2. Amazon GDC
@bescuseme
Twitch.tv/bescuseme
Greg is the Product Manager on the
Extensions Developer Services team. His
team’s mission is to empower developers
everywhere to build experiences that delight
broadcasters, viewers and players
Greg Smith
Senior Product Manager

3. Amazon GDCAmazon GDC
Introducing
Extensions
Extensions are interactive video player overlays and panels that can be
installed directly on the channel page by broadcasters

4. Amazon GDC
1 179 Extensions Launched to
Date (since September 2017)
2
Developers can build interactive
games, rich data overlays and
more
Fun Twitch Extensions Facts
(and what you’ll learn today)
4 Why you should care about
Extensions (and build one)
5 How you can build an
Extension
3
Nearly 2000 Extensions
Created since Launch by over
1000 Developers
6 How Twitch will help you build
an extension even faster

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RPG Loot Collection
Game as an Extension
Stream Legends
(by Proletariat)
Individual progress saved across channels,
community progress is channel specific
Full mobile gaming-style experience directly
integrated with the Twitch channel page
Games on Twitch
Cross Channel Experiences

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Real Time View of Loot
Stats and Perks
Destiny 2 Armory (by
Grab Games)
Provides transparency and education to viewers,
encouraging them to experiment
Loadout overlay updates as the streamer equips
new items
Real Time Data
No More “What gun is that?”

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Blur the lines between
Playing and Watching
Innkeeper overlay (by
Curse inc.)
Synced with broadcast delay to avoid spoilers
Viewers experience powered by live metadata
stream from on-computer client
Live Game Data
The Ultimate Spectating Experience

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Why
Should
You
Care?

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Let’s
Build an
Extensio
n

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EXTENSION
ARCHITECTURE

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1 Create your Extension at
dev.twitch.tv
2
Generate Hello World via the Rig
Command Line Interface and run it
in the rig
Get Started Building an Extension
4 Build and test locally using
the Rig and your favorite IDE
3
Clone the Extensions
Developer Rig from GitHub
(also need to install Yarn)

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Demo Time!

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1
Upload Assets to Twitch CDN
via the Extension Developer
Portal
2
Submit Your Extension to be
Reviewed
Next Steps to Finish Your
Extension
4 Release Your Extension
3
Test Your Application on Your
Channel

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We will be continually releasing new functionality and encourage the community to
contribute to the project
Developer Rig Roadmap
Test Extensions
Locally Against
Prod Endpoints
Scaffolding/Hello
World Generation
Scriptable User
Input
Mock HTTP
Endpoints
Mock Twitch
PubSub
Wave 1 (Now) Wave 2 Wave 3

15. Amazon GDC
@bescuseme
Start Building Your
Extension Today!
Go to dev.twitch.tv to learn more

16. Thank you!