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Posts by Ari Arnbjörnsson

What's this? Info on Unreal's next-generation terrain solution? 👀
Full 3D, enabling overhangs and tunnels?!
Multi-user non-destructive modifiers, and it can still import heightfields?!
Both Nanite and trad LODs 🤯
dev.epicgames.com/community/le...

1 month ago 12 6 0 0
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The Great Hitch Hunt: Tracking Down Every Frame Drop | Tutorial Hear ye, developers! A scourge plagues our beloved industry. Grab your pitchforks and rally with Ari “the Hitch Hunter” Arnbjörnsson as he arms you with...

We've added two extra hitch types to The Great Hitch Hunt article: "UI Widget Hitch" and "Text Hitch", written by my coworker @codyjero.me. Go check it out!

dev.epicgames.com/community/le...

1 month ago 11 4 1 0
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This week marks my five-year anniversary at Epic Games! 🎉

Thank you to my lovely coworkers and to all the UE devs out there who make my job such a blast!

Keep making amazing games everyone! 🤘

1 month ago 30 0 2 0
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When Unity started collapsing I made a quick "how do I get going in Unreal" website many folks found helpful. that website has now MOVED and is a DIFFERENT COLOUR. If you want Unreal demystification, tips and scoops, this is a place

www.ughiguessiwanttomovefromunitytounreal.com

1 month ago 290 101 9 2
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Haha I'd say you get to choose your pick of the litter

1 month ago 2 0 0 0
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Oldest logo is best!

1 month ago 3 0 1 0

It's also good to remember that you don't have to include the logo in your game, you should actually ask us permission first:
bsky.app/profile/flas...

1 month ago 3 0 1 0
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I keep seeing people using the old UE logo to advertise their game/product. We updated it quite a while ago (the U is rounder now.)
You can just download the high-res logo from unrealengine.com/branding, don't get it from Google Images 😬

1 month ago 8 0 2 0
In-Engine · Double Fine's Keeper - Unreal 5 Exploration
In-Engine · Double Fine's Keeper - Unreal 5 Exploration YouTube video by Double Fine

Awesome video where @doublefine.com show you their in-engine Unreal workflows 😍 #uetips

www.youtube.com/watch?v=VMa5...

1 month ago 5 0 0 0
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That's how you get zero stutters in your game. You're welcome, game industry. #uetips

2 months ago 21 7 1 1
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Profiling with Purpose: Performance Lessons from a Real Unreal Project | Tutorial How does Epic Games’ Technical Developer Relations team profile games? Watch this session recorded at Unreal Fest Stockholm and learn our optimization...

The text version of "Profiling with Purpose: Performance Lessons from a Real Unreal Project" is up! Check it if you, like me, prefer text/images over videos for learning. #uetips

dev.epicgames.com/community/le...

2 months ago 28 5 1 1
The Technical Journey of Clair Obscur: Expedition 33 | Unreal Fest Stockholm 2025
The Technical Journey of Clair Obscur: Expedition 33 | Unreal Fest Stockholm 2025 YouTube video by Unreal Engine

"Clair Obscur was 95% Blueprints"

I've been eagerly waiting for this talk to be uploaded, great job Tom and team 💪

youtu.be/t1CrbTx6O6w?...

2 months ago 35 7 0 1
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I gave a talk on Slate in Unreal Engine as part of JetBrains GameDev Day, and the individual video is now up!
https://www.youtube.com/watch?v=1n3oIfI7nBM
#UnrealEngine

2 months ago 16 4 0 0
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Developing Large Procedural Systems with Low Friction and Fast Generation (Presented by Epic Games) | Agenda | GDC Festival of Gaming The GDC Festival of Gaming program blends expert insight with interactive formats designed to spark ideas, sharpen skills, and connect communities.

I'll be presenting with the awesome @highlyspammable.bsky.social
at the GDC26!! Come say hi :D

Developing Large Procedural Systems with Low Friction and Fast Generation (Presented by Epic Games) #GDC2026 #PCG #UE

schedule.gdconf.com/session/deve...

2 months ago 7 3 0 0
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Super early birds get the worms. The discount worms 🪱
200 worms! Or I mean, they get to not have those worms. Uhm...
Anyway, cheap tickets! 😅

Super-early bird pricing at $200 off for Unreal Fest Chicago are now available: unrealengine.com/events/unreal-fest-chicago-2026

3 months ago 2 0 0 0

The deadline for submitting talks for Unreal Fest Chicago is this Thursday, Jan 22nd! ⏱️

3 months ago 5 1 0 0
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Mastering Async Loading in Unreal Engine | Knowledge base This tutorial explains how async loading works and how to best leverage it.

Check out all the recent work that's been done to make async loading UObjects in the editor a reality. You can give it a try in 5.7:
dev.epicgames.com/community/le...

3 months ago 20 2 0 0
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Conferences can be super busy; it can be hard to find the time to eat dinner.
Fun fact: hors d'oeuvres can be a dinner if you just eat enough of them! 🤯

Pic related: me gobbling down finger food while the other person talks.

3 months ago 5 0 0 0
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The Great Hitch Hunt: Tracking Down Every Frame Drop | Tutorial Hear ye, developers! A scourge plagues our beloved industry. Grab your pitchforks and rally with Ari “the Hitch Hunter” Arnbjörnsson as he arms you with...

This guide complements The Great Hitch Hunt presentation really well, also check that out if you haven't already: dev.epicgames.com/community/le...

4 months ago 1 0 0 0
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Level Streaming Hitching Guide | Tutorial Guide to recognizing common level streaming hitches in your Unreal Insights captures and tips and links to resources to address them. Hitches refers to ...

My coworker Zhi Kang Shao just published the Level Streaming Hitching Guide, a huge resource on the things you can do to prevent hitches during level streaming.

Read it here: dev.epicgames.com/community/learning/tutorials/qpll/unreal-engine-level-streaming-hitching-guide

4 months ago 7 2 1 0
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Unreal Fest 2026 is coming to Chicago next June, and I want YOU to present there!

Call for proposals is open until January 22nd, speakers get free hotel accommodation and conference tickets 🤘

Apply here: unrealengine.com/news/apply-to-present-at-unreal-fest-chicago-2026

I hope to see you there!

4 months ago 1 0 0 1
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Level Streaming Hitching Guide | Tutorial Guide to recognizing common level streaming hitches in your Unreal Insights captures and tips and links to resources to address them. Hitches refers to ...

Another one for my #UnrealEngine required reading list: dev.epicgames.com/community/le...

4 months ago 8 3 0 0

Oh god 😅

4 months ago 1 0 1 0
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"Mafia: The Old Country: Using MetaHuman in a AAA Character Pipeline" is a fantastic talk on Hangar 13's use of MetaHuman for their amazing-looking characters! 🤩

Watch it here: youtube.com/watch?v=V8rL1r_1IcQ

4 months ago 4 0 0 0

Ari and I both said a lot of words on stage at #UnrealFest Stockholm, and I think these are the most important. How to think about profiling, how to read the unicorn barf that is Unreal Insights, and tips for looking at GPU captures.

4 months ago 12 6 2 0
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Wow, perfect timing! I was just writing up some info on that internally for my teammates 😄
See image. The link goes here: dev.epicgames.com/documentatio...

4 months ago 3 0 1 0
Profiling with Purpose: Performance Lessons from a Real Unreal Project | Unreal Fest Stockholm 2025
Profiling with Purpose: Performance Lessons from a Real Unreal Project | Unreal Fest Stockholm 2025 YouTube video by Unreal Engine

How do we profile games at Epic Games? Check out this presentation where @mattoztalay.bsky.social and I examine perf captures from Arctic Hazard's "NORSE: Oath of Blood" and show you how to use Unreal Insights and PIX.
www.youtube.com/watch?v=C-Aj...

4 months ago 18 2 0 1

Hæ from Reykjavík! Huge thanks to @flassari.bsky.social for being part of the very first Reykjavík Game Summit, and for capturing this great moment along the way! 📸

4 months ago 5 2 0 0

There are no stupid questions!
That's basically what's already happening. They shouldn't get compiled every game start, they get cached by the GPU driver. UE still needs to send those requests to make sure every one of them is still cached, but it's much faster on subsequent runs.

4 months ago 1 0 1 0
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