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Sam Seltzer-Johnston

@sbseltzer.net
598 followers 1.3K following 1.8K posts

I make games and tools NPC systems for Dragonhold: store.steampowered.com/app/1510330/… Co-developed ExoCorps: exocorpsgame.com/steam He/Him 😷 sbseltzer.net Amateur photographer of critters that cross my path 🦀

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Sam Seltzer-Johnston @sbseltzer.net · 29/08/2026
I'm extremely biased here, but... DM-Strata is just so pretty
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Sam Seltzer-Johnston @sbseltzer.net · 21/06/2026
Tonight's street crab 🦀
Crab making itself smolCrab now in defensive postureCrab from behind, still in defensive posture
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Sam Seltzer-Johnston @sbseltzer.net · 17/06/2026
Here's another one I found
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Sam Seltzer-Johnston @sbseltzer.net · 17/06/2026
🦀
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Sam Seltzer-Johnston @sbseltzer.net · 15/06/2026
Crabs doinking 🦀
I'm not sure what you want me to say. I guess they sort of look like they're balanced upright against each other hugging using their whole body? I guess with crabs it'd be called "going vertical" wouldn't it?Same crabs from a different angle, clearly having a real swell time.
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Sam Seltzer-Johnston @sbseltzer.net · 14/06/2026
Nah dude this is 100% the antagonist from Kirby 64 Crystal Shards
Dark Matter eyeball monster from Kirby
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Sam Seltzer-Johnston @sbseltzer.net · 14/06/2026
Ghost crab 🦀
Ghost crab peeking out of its burrow
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Sam Seltzer-Johnston @sbseltzer.net · 13/06/2026
Jungle crabs 🦀
Crab tucked into a hillside with fallen leaves around itCrab on dirt in the shadeCan barely see this little crab in the shade on some leaf debris
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Sam Seltzer-Johnston @sbseltzer.net · 13/06/2026
Maybe some big ones too. You know, as a treat.
An absolute unit of iguana. It is the same color as the dirt it's chilling on. Massive chin flap. Another iguana. This one is chilling on the ground right in front of a doorway.
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Sam Seltzer-Johnston @sbseltzer.net · 13/06/2026
Well, if you insist...
Brown lizard with black and white stripes watching me. It's on some fallen dead leaves, so it blends in well.
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Sam Seltzer-Johnston @sbseltzer.net · 13/06/2026
Might I interest you in a small lizard? 🦎
Little green lizard poking its head out from behind some driftwood
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Sam Seltzer-Johnston @sbseltzer.net · 13/06/2026
Tonight's street crabs
Crab in the street.Same crab gets a close-up picture. It was perfectly frozen! It even let me poke at it! Didn't move until I tilted it a little off balance (a car was coming and I didn't want it to get squished). Same species as last one, but a different crab. This one was even smaller and it's somehow cuter the way it's peering up at me.
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Sam Seltzer-Johnston @sbseltzer.net · 12/06/2026
🦀 I found on the street tonight. Was very kind to pose for me.
Crab on some twigs, awaiting my next moveSame crab, now striking an intimidation pose. It's like the size of 4 US quarters, so a bold move.
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Sam Seltzer-Johnston @sbseltzer.net · 11/06/2026
🦀
Tiny hermit crab, peering
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Sam Seltzer-Johnston @sbseltzer.net · 11/06/2026
Found one in the street tonight 🦀
Tiny Hartnollius Quadratus on the street by the edge of my shoe Tiny Hartnollius Quadratus on the street, scurryingTiny Hartnollius Quadratus on the street, still scurryingTiny Hartnollius Quadratus on the street, now a safe distance from me
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Sam Seltzer-Johnston @sbseltzer.net · 11/06/2026
🦀
Hermit crab on the go
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Sam Seltzer-Johnston @sbseltzer.net · 11/06/2026
Anyone know what these guys are? Found on beach in Nayarit after a long day of rain. #invertebrates
Sort of looks like a blue pink translucent alien grub. Some kind of seafaring invertebrate. Just hanging out on the sand. I'm not sure whether I'm looking at the back or front of this thing. Sort of looks like a blue pink translucent alien grub. Some kind of seafaring invertebrate. This one is surrounded by bits of driftwood. Sort of looks like a blue pink translucent alien grub. Some kind of seafaring invertebrate. This one is on a washed up coconut.
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Sam Seltzer-Johnston @sbseltzer.net · 10/06/2026
🦀
Tiny hermit crab, peering
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Sam Seltzer-Johnston @sbseltzer.net · 09/06/2026
Land crabs are coming out of hibernation for annual migration! Got here just in time for the first big rain of the season. So excited to finally see these little buggers up close! 🦀
Tiny land crab on a rocky surface. The top of its carapace is dark blue. Its underbelly and legs are a pale yellow. It's arms have a reddish tint. It has a colorful orange making just under its eye stalks like a little bandit mask. Larger land crab huddled at the base of a tree facing away from the camera. Has the same coloration and markings as the other one.
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Sam Seltzer-Johnston @sbseltzer.net · 12/03/2026
Ok, so first attempt I forgot to disable my night light mode, which made distinguishing warm colors noticeably harder. Second attempt with true display colors I scored apparently close to a mantis shrimp lmao. www.keithcirkel.co.uk/whats-my-jnd... www.keithcirkel.co.uk/whats-my-jnd...
JND score of 0.0021 - "Okay this is genuinely impressive. You're well below the standard JND of 0.02. The CIE should be sending you a job offer. Or at least a certificate."JND of 0.00080 - "Okay, either you're a mantis shrimp in a trenchcoat or your display has a secret wide-gamut mode nobody told me about. Suspiciously impressive."
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Sam Seltzer-Johnston @sbseltzer.net · 18/02/2026
friend shaped :3
Rhinoceros Beetle perched on human fingers. It is large and black with a rhino-like horn.
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Sam Seltzer-Johnston @sbseltzer.net · 17/02/2026
some very good crabs today 🦀
Ghost Crab on sand (about size of a nickel, semi-transparent with red and black speckles) 
3/4 top front viewGhost Crab on sand (about size of a nickel, semi-transparent with red and black speckles) 
3/4 top back viewHermit crab on sand. Very chonky. Looks peaceful. Unidentified crab nestled in sand. It is about the size of a drink coaster and has a wavy black line pattern on a sand colored shell. Its shell has a slight shine to it.
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Sam Seltzer-Johnston @sbseltzer.net · 15/02/2026
don't mind me just crabposting 🦀
Crab on a rockCrab on a rockCrab on a rock
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Sam Seltzer-Johnston @sbseltzer.net · 13/02/2026
Same spood, dorsal view
Dorsal view of same spiny orb weaver
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Sam Seltzer-Johnston @sbseltzer.net · 12/02/2026
Got some very nice pictures of a very good spood
Some kind of spiny orb weaver (Nayarit, México)
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Sam Seltzer-Johnston @sbseltzer.net · 19/01/2026
There's a handy setting that reminds you before posting!
Screenshot of bluesky accessibility settings to demonstrate the "require alt text before posting" option
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Sam Seltzer-Johnston @sbseltzer.net · 26/10/2025
So the GMod workshop addon was busted but I found their Github repo and installed it manually just fine. Really wishing I had some friends to play with. The custom gamemode scene on GMod is super dead these days.
Screenshot of a sloppy GeoForts base I made in GMod. View is first-person, holding some kind of automatic rifle.
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Sam Seltzer-Johnston @sbseltzer.net · 26/10/2025
I wonder how long it would take for me to make a reasonably fun GeoForts clone in Unreal.
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Sam Seltzer-Johnston @sbseltzer.net · 17/10/2025
Hooo boy I should NOT have learned how to make `BlueprintAutocast` functions... #UnrealEngine #UE5 #UE4 #GameDev
Screenshot of Unreal's blueprint editor, showing an automatic conversion from Object to Character.
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Sam Seltzer-Johnston @sbseltzer.net · 10/10/2025
whew really starting to feel the storage space squeeze...
Windows explorer window showing how full each drive is. All 3 are nearly full and colored red. They're named, from left to right, "Windows (C:)", "DevDrive (D:)" and "Borderworld (X:)"
The last one is a Half-Life 1 reference. 😁
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Sam Seltzer-Johnston @sbseltzer.net · 07/09/2025
I have narrowed it down to some form of math/boolean evaluation problem. Here is a minimal reproduction on Win64 Development Editor configuration: Comparison A resolves to True Comparison B resolves to False They should both fail!
			volatile FVector V = FVector{FMath::Sqrt(-1.0), FMath::Sqrt(-1.0), FMath::Sqrt(-1.0)};
			volatile double X = V.X;
			volatile double Y = V.Y;
			volatile double Z = V.Z;
			volatile double Tolerance = UE_KINDA_SMALL_NUMBER;
			volatile double dX = FMath::Abs(X-V.X);
			volatile double dY = FMath::Abs(Y-V.Y);
			volatile double dZ = FMath::Abs(Z-V.Z);
			// Comparison A
			{
				volatile bool bTolerates = (dX <= Tolerance) && (dY <= Tolerance) && (dZ <= Tolerance);
				bool bResult = TestTrue("InvalidVector == InvalidVector", bTolerates);
				UE_LOG(LogTemp, Warning, TEXT("Result: %d %f %f %f %f"), bResult, dX ,dY, dZ, Tolerance);
			}
			// Comparison B
			{
				volatile bool bToleratesX = (dX <= Tolerance);
				volatile bool bToleratesY = (dY <= Tolerance);
				volatile bool bToleratesZ = (dZ <= Tolerance);
				bool bResult2 = TestTrue("InvalidVector == InvalidVector", bToleratesX && bToleratesY && bToleratesZ);
				UE_LOG(LogTemp, Warning, TEXT("Result: %d %d %d %d"), bResult2, bToleratesX, bToleratesY, bToleratesZ);
			}
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Sam Seltzer-Johnston @sbseltzer.net · 01/09/2025
A very willing subject
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Sam Seltzer-Johnston @sbseltzer.net · 01/09/2025
This is the most photogenic jumping spider I've encountered yet
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Sam Seltzer-Johnston @sbseltzer.net · 25/08/2025
I fell backward out of my chair the first time I got attacked by a zombie in Half-Life.
Screenshot of zombie enemy in Half-Life.
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Sam Seltzer-Johnston @sbseltzer.net · 15/08/2025
I guess I'm old enough that some of my games don't show up on here. For example, I had The Orange Box on disc already and registered it on Steam. I guess those games don't count toward purchase history in the Steam interface. Note: The Dec 28, 2009 purchases were gift purchases.
Steam purchase history from bottom to top:

Feb 17, 2007 - Garry's Mod
Nov 15, 2008 - Left 4 Dead
Nov 15, 2009 - Left 4 Dead 2 (preorder)
Dec 28, 2009 - Garry's Mod, Half-Life 2: Episode Two, Counter-Strike: Source | NOTE: This was a gift purchase
May 14, 2011 - Portal 2
Aug 11, 2011 - Limbo
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Sam Seltzer-Johnston @sbseltzer.net · 23/07/2025
took some bad pictures of some good bugs today
monarch butterfly feeding on milkweed flowerfuzzy no-touch looking caterpillar, likely the larvae form of some kind of moth - mostly shades of gray and orange with black spots
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Sam Seltzer-Johnston @sbseltzer.net · 21/07/2025
got another pic of this tree frog on glass - look at the lil face!
a tiny tree frog climbing on the outside of a window, peering in!
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Sam Seltzer-Johnston @sbseltzer.net · 20/07/2025
Tiny visitor 🐸
A tiny tree frog clinging to outside of a screen, viewed from indoors
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Sam Seltzer-Johnston @sbseltzer.net · 10/06/2025
Found another one a year later. Not as large as the first one but still a big bug.
Female dobsonfly on pavement bricks.
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Sam Seltzer-Johnston @sbseltzer.net · 10/06/2025
Had to look through my old camera uploads but I found her!
Absolutely massive female dobsonfly on a sidewalk.
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Sam Seltzer-Johnston @sbseltzer.net · 05/06/2025
Downright criminal that Dog Soldiers isn't on here. It's still my favorite werewolf depiction.
An absolutely massive werewolf. From the movie Dog Soldiers.
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Sam Seltzer-Johnston @sbseltzer.net · 03/06/2025
also just gonna say ExoCorps was made in UE3 and most players thought we were on the latest UE4 at the time so it's really more up to the designers/artists how game perf and fidelity are received than the engine vendor.
Screenshot from ExoCorps: futuristic exo-soldier posing with weapon in desertScreenshot from ExoCorps: futuristic drone robot flying in a desertScreenshot from ExoCorps: a mess of missile swarms and bullet trails in the skyScreenshot from ExoCorps: first-person view with weapon and HUD in a vast rocky desert
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Sam Seltzer-Johnston @sbseltzer.net · 21/05/2025
horse staring into the distance on a beach. image just has the words "MAN" at the top.
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Sam Seltzer-Johnston @sbseltzer.net · 21/05/2025
lol loving the last 3 bullet points here
Can't be replayed
"Surprise Chats" featuring the worst story in videogame history
The Unstuck Guarantee - struggling to complete a level? we discard it!
Ultra streamlined user interface - you can't even choose levels
Supports controllers, keyboard + mouse, mouse only, and keyboard only (OG Doom 4Evah)
Tweak everything including FOV, chaos, difficulty, performance, flashing
Everything has been sacrificed to fill your screen - there are no empty spaces
Never gets faster, only denser (like you)
Not a game, an assault
You'll Learn Nothing
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Sam Seltzer-Johnston @sbseltzer.net · 17/05/2025
I just cannot believe such a calm house centipede exists that it can rest on a human hand without wilding out. What must life be like for this creature?
Photograph of a captive-bred house centipede resting on a human finger. House centipedes are usually too afraid of humans to let you get anywhere near them so it's kind of remarkable to see one being held.
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Sam Seltzer-Johnston @sbseltzer.net · 15/05/2025
Anyone know who this spider is? Haven't seen any ants for a couple days now and I think this is why. 😅
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Sam Seltzer-Johnston @sbseltzer.net · 10/05/2025
among my favorite frames from frieren
Single frame from Frieren. Depicts a small orange bird flying above a forest at explosive speed with a massive dust cloud where it took off, well on its way to breaking the sound barrier.
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Sam Seltzer-Johnston @sbseltzer.net · 07/05/2025
Not terrible for a first attempt!
A close-up photo of a very frightened ant.
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Sam Seltzer-Johnston @sbseltzer.net · 20/04/2025
I remember at the eclipse last year I was sitting in the grass and kept finding them on my body and my internal monologue was always like "omg look at the little guy! must be careful not to crush the tiny blessing uwu" My photos suck but this is what they looked like:
a tiny jumping spider on fabric. it's mostly light gray with reddish spots.
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Sam Seltzer-Johnston @sbseltzer.net · 20/04/2025
Just look at those big curious eyes!
photograph of a tiny jumping spider on a leaf staring at the camera with its head tilted to the side inquisitively
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