Pareidolia

A limit order book simulator demonstrating that support, resistance, and breakout patterns emerge from purely random traders — not psychology. Every trader places orders within ±1% of the last traded price.

Browser rewrite of the original GPU Taichi simulation. Runs entirely client-side.

Speed8×

LTP

100.00

Candles

0

Tick

0

How it works

1000 traders, each with 0.5% chance of placing an order per tick (~5 orders/tick). Random 50/50 direction, price within ±1% of last traded price.

Why patterns emerge

20% of unmatched orders persist as resting liquidity (green = bids, red = asks). These accumulate into visible support and resistance — entirely from random math, not psychology.

Inspired by

Krafer's GPU market simulator (watch video ↗). This is a TypeScript rewrite of the GPU Taichi version.

Let it run for ~200+ candles for patterns to develop. The heatmap background shows accumulated resting orders — watch horizontal bands of green (support) and red (resistance) form and hold across multiple candles, then break.