Blueteak

Blueteak

Most of the work is below the waterline.

I'm Jonathan Schenker, a game developer and software engineer. I run Alvios and build games and the systems underneath them.

Take the plunge GitHub

The part you can play

Games I’ve worked on, from VR archery to a four-player caravan. This is the bit that catches the light.

A white-robed spellcaster in Vellum’s violet library, towering bookshelves and a brass armillary sphere behind

Vellum

A co-op roguelike set inside magical books. Choose a class color, build a plot-twisting spellbook and shape how your enemies grow, alone or with up to three friends.

Alvios GamesReleased 20251–4 players online

A wooden merchant caravan with a red awning, parked on a bright green hill under a blue sky

Roads & Riches

Load the caravan and trade your way across faraway lands, selling wonderful wares and finding magical treasures in an economy where every journey plays out differently.

Alvios GamesComing soon1–4 players online

The QuiVr logo over an archer overlooking a desert canyon full of glowing enemies

QuiVr

VR archery where the bow is really in your hands. Hold your keep against an ever-advancing enemy, on your own, in online co-op, or head to head.

SteamVRReleased 2018Developed as Blueteak

The rainbow Marble It Up! logo beside a glass marble rolling over a red track in space

Marble It Up!

A precision marble platformer and spiritual successor to Marble Blast, made by a collective of independent studios that includes Alvios.

First released 2018Ultra on Switch, PlayStation, Xbox, PC & Mac

Below the waterline

Open source, a faithful recreation and a small web experiment. Less screenshot-friendly, just as fun to build.

  • The Unity logo inside a brain made of connected points

    Unity Neural Network

    A simple feedforward neural network in C#, small enough to read in one sitting. Its demo scenes learn which text color is easiest to read on a random background, and when to jump.

    C# · Unity200+ stars on GitHub

  • A black-and-white first-person maze corridor with an eyeball opponent, above a top-down maze map

    MazeWar

    A pixel-perfect recreation of Maze War as it ran on the Xerox Alto: the original 606 × 808 display, replica Alto fonts, LAN multiplayer and AI rivals with pathfinding and sight.

    C#1970s shooter, rebuilt

  • A network of blue nodes labelled with lyric words

    Lyric Graph

    Enter a song and its artist and the lyrics become a network. Bigger nodes repeat more; thicker lines join words that keep turning up side by side.

    WebRuns on this server

About the iceberg

An iceberg diagram: a small tip labelled “what players see” above the waterline, and a much larger mass labelled “what keeps it afloat” beneath it. what players see what keeps it afloat

I’m Jonathan Schenker. Online I’m Blueteak, which is also the developer name on QuiVr’s Steam page. I run Alvios, the studio behind Vellum and Roads & Riches.

The avatar is a fair summary of the job. The part people see is the fun bit: a satisfying bow draw, a marble that rolls just right, a spell that lands. Most of the mass sits underneath: tools, systems, and code tidy enough that the next feature is easy to add. I enjoy both halves.