Game Design Director for @riotgames MMO. Formerly @LeagueOfLegends. Riot Scruffy. He/Him
Joined January 2012
- Tweets 3,165
- Following 304
- Followers 134,421
- Likes 3,605
303 Photos and videos
Jun 8
Damn that’s slick animation
The Ashen Exorcist has a new target in his sights. It’s time to free Vayne from her demonic curse ⚔️
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Mark Yetter retweeted
Apr 11
We're looking for a Sr. Technical Animator to join the MMO-team!
If you’re a pro at Anim Blueprints, Control Rig, HSMs, and making movement feel just right, come help us make the characters of Runeterra come to life.
Apply now: riotgames.com/en/work-with-u…
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Mark Yetter retweeted
Tech Artists, do you deeply understand PCG systems, Houdini, and emergent tech for large environment generation? Help us bring the world of Runeterra to life!
Sr. Environment TA - tinyurl.com/SrEATA
Principal Environment TA - tinyurl.com/PrEATA
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Mark Yetter retweeted
Feb 28
We are seeking a Senior Technical Animator to join our MMO team. If you are an expert in Unreal and Hierarchical State Machines and passionate about breathing life into diverse NPCs, player characters, and creatures, we want to hear from you!
Apply here: riotgames.com/en/work-with-u…
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Mark Yetter retweeted
Feb 21
JOB ALERT! We’re hiring a Principal Rendering Engineer for the League MMO.
Please help repost this :^) 🙏
Looking for someone who has shipped high-quality real-time graphics and wants to operate at an expert level: setting rendering direction, building core architecture, and partnering with art/design to push fidelity and performance.
Focus areas:
* Core rendering systems
* Performance & scalability across platforms
* Long-term rendering strategy
* Mentorship
Strong C deep modern rendering experience required. AAA / engine-level background highly relevant.
Apply (or share): riotgames.com/en/work-with-u…
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Mark Yetter retweeted
Feb 2
This weekend was another reminder of how hard building MMOs truly is. They demand grit, resilience, long-term vision, deep player insight, and mastery of complex systems at scale. If that’s exactly what excites you, if you’re a master of your craft and love the League universe, join us in creating something special: riotgames.com/en/work-with-u…
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Jan 26
2 new design roles just opened up on my team, one for gameplay and one narrative design. Also there are interesting roles in art, engineering, and production.
If you or anyone you know wants to work with a passionate team, please apply!
riotgames.com/en/work-with-u…
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Jan 7
Shyvana looking so cool in this!
In the darkest hours, there is always a beacon of hope 🪽✨ Watch the full 2026 Season 1 Cinematic now on YouTube.
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1 Dec 2025
Excited for these changes, that ADC quest with the 7th slot in particular makes me happier than it should.
1 Dec 2025
.@RiotMeddler and @RiotPabro are joined in this Dev Update by @RiotPhreak, @RiotEndstep, @DashiJador, and Riot CallMeKT to talk about:
🏰Season 1 2026 Theme
👀Summoner's Rift Gameplay Changes
🥇Ranked
⏩Swiftplay
⌨️WASD
😢And more
Timestamps:
Intro: 0:00
Season One Theme: 00:37
Summoner’s Rift Changes: 02:17
Ranked: 10:29
Swiftplay: 14:44
WASD: 17:31
???: 20:34
Outro: 20:57
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Mark Yetter retweeted
9 Nov 2025
Big, little, somewhere in-between—all legends echo across the Convergence, and the Grand Library keeps them safe. Until someone curious enough reawakens them. ✨📖✨
Bring Runeterra’s most iconic stories back to life in TFT’s newest set, Lore & Legends. Start exploring on Dec 3.
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9 Nov 2025
That was my favorite worlds finals series of all time, just amazing!
Every single game was a completely fresh draft. Seeing these two great teams adapt and fight all the way to the end. I just loved it.
#Worlds2025
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7 Nov 2025
NOOOOOO! I'm shocked, that was crazy
7 Nov 2025
Centuries ago, Zaahen made a choice. Now, Xin Zhao must make his own 👀
Watch the Season 3 cinematic on YouTube now.
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Mark Yetter retweeted
17 Oct 2025
Why we’re NEVER bringing back the Winter Map
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10 Oct 2025
come work with us! 🔥
we just opened up a Senior Technical Artist for Characters role >:D
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7 Oct 2025
Changes very on point here. Great work from the league team!
6 Oct 2025
Player Behavior summary:
In the next few patches we're rolling out a bunch of features to make your game experience better.
Boosting and Hitchiking
- We banned and reverted the ranks of tens of thousands of accounts that have been boosted or hitchiked. We're taking it slow to make sure we don't hit innocent accounts
Purchased and Botted Accounts
- In our last wave, thanks to the Anti-Cheat team we've banned ~4.5 million accounts
- 1.5 million accounts that were botted and sold
- 400k that were bought, used in Ranked and have been destroyed
- 2.5 million Ranked ready accounts that were waiting to be sold
- If an account is purchased or sold as of 25.18, we will catch it eventually and it will be destroyed
Account & Penalty Linking
- We're looking to take action on accounts that we're sure share an owner starting in Patch 25.23
- We know Penalty avoidance is an issue and we're looking to put a stop to it
Streamer Mode
- An improvement on streamer mode is launching this Patch (25.20) that can hide any identifying information from lobby to end of game
Check out the FAQ on Purchased and Botted accounts here: leagueoflegends.com/en-us/ne…
And check out the Dev Blog with more details about account linking and streamer mode here: leagueoflegends.com/en-us/ne…
We're just getting started trying to make the Rift the best it can be and thank you for coming along on the journey with us.
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6 Oct 2025
Lets go!
you don’t have to face every fight alone. 2xko official cinematic out now: ties that bind (ft. courtney laplante of @spiritboxband)
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3 Oct 2025
MMO Job opportunities!
We have a number of recently opened roles across all crafts. But in particular we just opened 2 new tech designer roles in Gameplay and AI.
We have an awesome team, and we're working on an incredible dream project. Come apply!
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Mark Yetter retweeted
1 Oct 2025
Help us bring Runeterra to life! 🌍 We’re hiring Tech Artists who know Unreal env tools modular workflows to power vast PCG systems. Apply here:
Senior and Principal Tech Artist (Environment)
riotgames.com/en/work-with-u…
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Mark Yetter retweeted
1 Oct 2025
We're hiring another Core Tech engineer to add to our ranks on the League MMO. We're looking for an experienced engineer who has a passion for MMOs and delivering amazing player experiences at scale.
Come work with us! Please help share this!
riotgames.com/en/work-with-u…
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