Builder · Gamemaker · Tinkerer

hi, i'm zaca. check out my projects and my data rabbitholes

I design and ship small software experiments — games, tools, and the occasional weekend rabbit hole. This is the lab where they live.

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Featured projects

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WordForge

A fast multiplayer word game. Built with Next.js + WebSockets, deployed on Vercel.

livevercel#next.js#game#realtime

PixelRoom

Collaborative pixel-art canvas. Drop in, paint a tile, watch it sync live.

livevercel#canvas#realtime#toy

SynthBox

A tiny in-browser synthesizer and step sequencer using the Web Audio API.

wip#webaudio#music

Latest data stories

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Counting buildings in downtown Lisbon

Used data from OpenStreetMap and city government to visualize construction permits issued for Lisbon's historical center. Also made a pretty GIF.

#lisbon#urbanplanning#data

The reach of A Padaria Portuguesa

Combined data from Zomato's API and geometric manipulations to estimate the proportion of Lisbon's surface area and population that lies within a 5-min walk of a Padaria Portuguesa.

#lisbon#gis#data

About

Ricardo Zacarias here — Professionally, I build game economies and the tools to balance them. As a hobby, I go down rabbitholes. That's what this site holds.

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