Bit-exact determinism
The same seed renders the same pixels and outputs on every platform and backend. A committed golden corpus guards every release.
Infinite Props
Seed-based procedural 2D assets. One small file, endless props, the same pixels on every platform.
9.0 KBa whole sword pack in one
.iprop file2³²seeds, with additional authored inputs
≈ 5 TBif you exported every one of them as a PNG
0bitmaps: every pixel is computed from the seed
What is Infinite Props?
Infinite Props is a portable binary format and an open-source toolchain for
seed-based procedural 2D assets. You describe a prop once in the small
.ips language, compile it to a self-contained .iprop file, and a tiny
sandboxed virtual machine turns any seed into pixels, bit for bit the same in the browser,
in your engine and on every operating system.
One file is not one image. It is a recipe for endless variations, and every result comes with the data your game needs: colliders, anchor points and colours.
Live examples
Rolled right here, right now
Every tile is a real .iprop file executed in your browser by the WebAssembly
interpreter. The seeds tick up on their own, or take over with ‹ ›.
Weapons 4 packs · 96×96
sword.iprop
axe.iprop
spear.iprop
staff.iprop
Portraits 3 packs · 64×64
portraits_rpg.iprop
portraits_scifi.iprop
portraits_civilian.iprop
Structured outputs
waiting for a roll…
skinColor…clothesColor…hatColor…eyes…mouth…
Returned with the pixels of the same call: tint the UI, match the hat, anchor the speech bubble.
Feeling lucky? Every case ends on a legendary.
A little code. A lot of butterflies.
Butterfly benchmark
Three procedural parts become one butterfly. Release fifty and see what your browser can do.
Generated, not stored
Preparing the wings…
seed —256 × 2565 visible layers · 3 files
Forewings × 2Front wings & antennae
…
Hindwings × 2Rear wings & pattern
…
Body × 1Fur, head & abdomen
…
Each wing part generates one side, then the browser mirrors it. The body sits on top. Wings flap independently around the body as every new butterfly takes flight. Each seed draws a fresh combination of shapes, colours and patterns from the same three files. The body takes its proportions and colour cues from the wings, so the parts fit together. Mirroring reuses the generated wing images, keeping both the download and the amount of generation work small. Benchmark 50x creates fifty fresh butterflies and reports their average generation time alongside the average fuel used by each part.
Main features
One file, endless props
An .iprop file is a recipe, not an image. Seed and authored inputs unlock a practically unlimited, reproducible family of sprites.
Safe to run anywhere
Validated bytecode, structured control flow only and a hard fuel budget: even an untrusted file cannot hang or escape its host.
A language for pixels
.ips speaks sprites: palettes, rects, distance helpers, lo to hi ranges and colour gradients, compiled with precise diagnostics.
Shaped randomness
Gaussian, triangular and beta distributions steer every roll, so proportions look designed rather than noisy.
Composable parts
Import a blade, a hilt, a face. Parts link into one self-contained binary, paint in call order and report outputs in the caller's coordinates.
Structured outputs
Colliders, anchors and colours come back with the pixels: the tip of a sword, the eyes of a portrait, the colour of a hat.
Tiny binaries
Each weapon pack on this page compiles to 7 to 11 KB. Files are zlib-packed whenever that is smaller and never need external resources.
Runs everywhere
One reference interpreter for Linux, macOS, Windows and WebAssembly. The tiles above are running it in this page.
C API and engines
A C99 interface on a versioned ABI (C API 0.4, SONAME 0.5), with SFML and Godot GDExtension integrations built on top.
Authoring toolchain
ipc, ipgen, ipsheet, ipdis, ipval and a VS Code extension with live preview, atlas and bytecode inspector.
Ready for coding agents
A compact, machine-checked LLM reference ships with every release, so an agent can write props in .ips alongside you.
Made with Infinite Props
Games showcase
Three slots, one game. The other two are saved for the most creative, craziest things anyone builds on a seed. The wilder the idea, the better its chances.
Showcase #1
Slot 02 · open
Slot 03 · open
Infinite Formula One
A top-down Formula One race where every car, circuit, driver, crowd and explosion is generated from a seed in your browser: 41 programs, not one image file.
Play on itch.ioYour game here
A roguelike where no two swords have ever looked alike.
Your game here
The legendary staff nobody has rolled yet is somewhere in your seed range.
The showcase is waiting for your game. Build something wild with Infinite Props and send a link. The boldest ideas land on this wall.
Submit your game