Devin Kelly-Sneed

I hope so

Bee Magic is a wonderful puzzle game (go play it!). Using movement patterns to cast spells creates interesting challenges with the level design. Really nice to read about design iteration on the map!

From @leepetty.bsky.social‬ and Double Fine Productions, our new game is Keeper - a beautiful and surreal third-person, atmospheric puzzle adventure, and a story told without words.

On October 17 2025 — The Keeper Shall Awaken! Wishlist today, and find out more on www.doublefine.com

You are the bed now.

Behind the Code: On The Move! Raz is an acrobat. He runs, jumps, climbs, rolls, swings, and slides through the world.

Last year I wrote about the movement systems for Raz that we built on top of Unreal’s CharacterMovementComponent. This covers the architecture of our Move Mode system, how a few of our custom modes work, and a bit about dealing with inconsistent gravity.

doublefine.com/news/behind-...

The most egregious scrabble play I’ve seen allowed is “MRT”. As in the actor Mr T. The folks at that table had a very unique interpretation of the rules.

Poor quality drawing of a dog with a head shaped light a twisty cfl light bulb

Mine didn’t come out right…

Save 90% on Psychonauts 2 on Steam Combining quirky missions and mysterious conspiracies, Psychonauts 2 is a platform-adventure game with cinematic style and tons of customizable psychic powers.

And if you haven’t already played Psychonauts 2, it’s currently an absurd 90% off on Steam: store.steampowered.com/app/607080/P...

I hope to find time to write more of these. It’s great to be able to share behind the scenes info for others to learn from. And the process of writing helps me think about how I might improve similar systems in the future.

Behind the Code: Designing Raz's Jump Skip down past this Video Gallery. Skip up past this Video Gallery. Skip down past this Image Gallery. Psychonauts 2: Jumping - Jump hold button…

I wrote a small series of articles earlier this year about some gameplay features I worked on in Psychonauts 2. A little look into how we built and tuned the systems. Here’s the one about Raz’s jump: doublefine.com/news/devin-a...

Any results from the chilled dough portion of the experiment?

Wow, 512 followers! Intro post time! I make games (current: Double Fine, past: LucasArts, Dynamighty). Mostly a programmer, but some design too. Other interests include music (piano and composition), puzzles, and being outside. Quiet, but sometimes I like to write about gameplay systems.

I played 868-HACK during my daily commute for years. Fantastic roguelike with interesting risk/reward choices, simple controls, and turn-based gameplay so you can play at your own pace. Very excited that a sequel is in the works!

The beautiful sounds are for my officemates, not me

Oh this sounds like me. I’d appreciate being added!

Very cool, nice progress!

I have fond memories of playing a bunch of these with you! Also Mario Kart on the broken tv where green and red shells were slightly different shades of brown.

That dopamine hit is the real reason to avoid premature optimization

Behind the Code: On The Move! Raz is an acrobat. He runs, jumps, climbs, rolls, swings, and slides through the world.

Navigating a brain involves running, climbing, and more.

Player Movement and Powers Feature Lead Devin Kelly-Sneed (@devinks.bsky.social) has once again sat down for a closer look at Psychonauts 2. This time, it’s all about movin’ around!

Read more: doublefine.com/news/behind-the-code-move-modes

I have a vague recollection that there were reasons we didn’t use EQS for this feature, but I wasn’t involved in the decision and unfortunately don’t know what they were. Best guesses: EQS being labeled “experimental” or concerns about it being too tightly tied to AI systems.

Most of the time game thread wasn’t the limiting factor in frame rate. We considered various optimizations (multithreading, storing targets in an octree, etc.) but didn’t end up needing to.

The targets were put into a few different lists based on broad search categories. We’d run through the entire list for the appropriate category. To mitigate the perf cost we tried to order the conditionals to discard as many targets as possible without doing very costly evaluations.

Registration was generally through InitializeComponent/UninitializeComponent. I think those got called when something streamed in/out, but can’t remember for sure. There was also a way for targets to be set Active/Inactive at runtime which let us temporarily ignore them during searches.

Behind The Code: Locked On Target Here’s a quick rundown of how Target Search was used to enable that sequence: Player fires Psi Blast. Target Search finds the flying Regret enemy to aim…

I wrote another Behind the Code article about Psychonauts 2! This time I explain how we used our Target Search system. It finds and prioritizes objects in the world for Raz’s powers to interact with.

www.doublefine.com/news/devin-t...

Jumping is one of the most important things you do in Psychonauts 2 but how do you design the perfect jump?

Player Movement and Powers Feature Lead @devinks.bsky.social breaks down the entire process behind Raz’s acrobatics in this article!

Read here: doublefine.com/news/devin-article-raz-jump

Figured out what the bus bridge is bsky.app/profile/kana...

This type of tragedy is why you should post a pet picture instead. Nobody is concerned about bad text when cute dog.

Oh, hah! Found Kee’s writeup. It was an issue with the fall volume respawn logic when there were multiple overlapping respawn requests. I’d fixed it in the dev branch before the reports came in, which is why we couldn’t repro!

Do you remember what the cause was? I remember trying to repro this one for hours.