Prismet · the workshop of Sage Deutschle

Hello There! My name is:

Sage Deutschle

I have shipped iPhone and Mac games. Coded Minecraft plugins and ran Minecraft servers. I also like to make custom Linux desktops, developer tools, and small web tools that keep your data on your device and in your control.

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Six wings around one prism. Pick a wing to open its records.

Desktop & SystemsHelm + 1
Apps & GamesPrismet + 1
Game Worlds & ModsThe Long Now + 1
MinecraftBayzyl
Web Tools & DataSteam Rewind + 2
Developer ToolsPrismCode + 2

Principal works

Paper Minecraft plugin

Bayzyl

Java 21 · Paper 1.21 · Gradle · FAWE-aware

WorldEdit is the foundation. Various tweaks to make it easier for beginners to learn, and for masters to create at their highest capacity. That is the core thesis behind all design decisions.

Alpha · open source (MIT)Read the case study Source

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1 / 8

A small world of generated shapesIn-game capture
Cylinder walls, stepped roofIn-game capture
A copper ring from a formulaIn-game capture
Inside the glass shellIn-game capture
The plaza and glass domeIn-game capture
A stepped sandstone pyramidIn-game capture
The geometry from aboveIn-game capture
Commands within reachHistorical interface

Powerful edits, understandable controls.

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Apps & Games

Prismet

SwiftUI · SceneKit · Game Center · Supabase

A calm home for classic games, on iPhone, iPad, and Mac

Live on the App StoreRead the case study App Store

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1 / 9

A pocket arcadeCo-developed
Chess with adjustable oppositionCo-developed
Place a fleetCo-developed
A daily Sudoku sheetCo-developed
Cards on green feltCo-developed
Checkers in red and blackCo-developed
Snake after darkCo-developed
Room for the whole collectionCo-developed
Chess on a larger canvasCo-developed

A collection with individual character.

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Desktop & Systems

Helm

KDE Plasma 6 · QML · SwiftUI · Bash

A command bridge for the home fleet.

Daily driverRead the case study

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1 / 8

Time across the worldRendered widget
A clock for the bridgeRendered widget
Twenty-four threads at a glanceRendered widget
The shape of a workloadRendered widget
The reactor faceRendered widget
One palette across the bridgeRendered widget
Storage as a visual mapRendered widget
What is using the machineRendered widget

A design system for useful instruments.

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Developer Tools

PrismCode

Electron · React · TypeScript · Monaco

Mission control for Claude Code, Codex, and DeepSeek

BuildingRead the case study

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1 / 2

Compare two proposed changesScripted demo
Inspect the diffScripted demo

Make agent work comparable.

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Game Worlds & Mods

The Long Now

Desktop

A mix of colony sim style storytelling, civilization technological progression.

BuildingRead the case study

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Before the first cityHistorical prototype
A bridge into the medieval eraHistorical prototype
The industrial turnHistorical prototype
A far-future horizonHistorical prototype
The Wizard King’s castleHistorical prototype
Life in the valleyHistorical prototype
Inside the gaming parlorHistorical prototype

Web Tools & Data

Steam Rewind

Web · Mac · iPhone

Your Steam library, told as stories

LiveRead the case study Live

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1 / 2

Rediscover the backlogDemo data
Time spent on the DeckDemo data

Fun Analytic Tools

Live-data tools that started inside the Prismet app. They run here too.

Live

Steam Rewind

Explore a Steam library: playtime, eras, and the games you forgot you own.

Live

Debt Clock

The U.S. national debt from Treasury data, ticking live. Yikes...

Live

Uncle Scam

Where is my money going? A salary and a ZIP code in, an itemized receipt for your taxes out.

All work

13 of 13 records

Principal works

BayzylWorldEdit is the foundation. Various tweaks to make it easier for beginners to learn, and for masters to create at their highest capacity. That is the core thesis behind all design decisions. Minecraft Java 21 · Paper 1.21 · Gradle Alpha · open source (MIT) Source

PrismetA calm home for classic games, on iPhone, iPad, and Mac Apps & Games SwiftUI · SceneKit · Game Center Live on the App Store App Store

HelmA command bridge for the home fleet. Desktop & Systems KDE Plasma 6 · QML · SwiftUI Daily driver —

PrismCodeMission control for Claude Code, Codex, and DeepSeek Developer Tools Electron · React · TypeScript Building —

The Long NowA mix of colony sim style storytelling, civilization technological progression. Game Worlds & Mods Desktop Building —

Steam RewindYour Steam library, told as stories Web Tools & Data Web · Mac · iPhone Live Live

Records

Accessible Debt ClockThe national debt, readable by everyone Web Tools & Data Web · iPhone Live Live

QR Scanner & pocket toolsOne-file web tools that never phone home Web Tools & Data HTML · CSS · JavaScript Live on GitHub Pages Live Source

CiceroA council app with a native iPhone companion Developer Tools Desktop · iPhone Building —

HOI4 AI War RoomWatch AI agents play Hearts of Iron IV Developer Tools Mac · LAN web Working —

Cabinet

Civilization V Mod ProfilesPick a stable or a risky mod build before you launch Game Worlds & Mods Mac Working —

QuarkA personal hub for mail, calendars, code, and files Desktop & Systems Electron · JavaScript · safeStorage Private build —

AirhornOne big red button Apps & Games Desktop Complete —

On the drafting table: Yggdrasil · Westeros for UEBS 2 · Helix Research Desk

Minecraft · a world of details

Built, block by block.

Minecraft →

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Harbor at sunsetMinecraft · July 2026
A city above the waterMinecraft · July 2026
A night build on a Minecraft server I ran.Minecraft · July 2026
Lanterns on the hillsideMinecraft · July 2026
Inside the colonnadeMinecraft · July 2026
A castle lit from withinMinecraft · July 2026
A landmark by the waterMinecraft · July 2026
Cherry trees after darkMinecraft · July 2026

Hi, I'm Sage.

I've been building, breaking, repairing, and experimenting with computers for as long as I can remember. Prismet started as the name of one of my projects and eventually became the name I use for everything I build.

My work ranges from apps and web tools to Minecraft infrastructure, Linux customization, and developer tooling. Some projects ship to the App Store, some live on this site, and the rest live on GitHub.

I like building tools that respect the person using them. They should be fast, understandable, private when possible, and designed around the actual problem instead of unnecessary complexity.

That philosophy applies whether I'm building a Minecraft plugin with safeguards for destructive edits, a lightweight web tool with no backend, or a Linux desktop where every widget earns its space.

Skills, with the project that proves each

SwiftPrismet
JavaBayzyl
TypeScriptPrismCode
JavaScriptQR Scanner & pocket tools
PythonPrismet
QMLHelm
BashHelm
SwiftUIPrismet
SceneKitPrismet
Game CenterPrismet
SupabasePrismet
Paper 1.21Bayzyl
WorldEdit / FAWEBayzyl
GradleBayzyl
KDE Plasma 6Helm
Arch LinuxHelm
ElectronPrismCode
ReactPrismCode
SQLitePrismCode
HTML & CSSQR Scanner & pocket tools
BarcodeDetectorQR Scanner & pocket tools
MusicKit JSQR Scanner & pocket tools

What I can build for you

Minecraft pluginsPaper & Spigot plugins, from one command to complete custom toolkits.
Minecraft servers & networksVelocity, Docker, permissions, backups, deployment, and server infrastructure.
iPhone, iPad & Mac appsSwiftUI apps built from the first screen through App Store submission.
Web tools & landing pagesFast, focused websites and utilities without unnecessary complexity.
Developer tooling setupEditors, terminals, and coding assistants configured to work together.
Linux desktop customizationKDE Plasma widgets, themes, scripts, workflows, and desktop automation.

Three doors

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