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September 17, 2026 · 2 min · quadraphonic · release · multiplayer · web3

QUADRAPHONIC 1.0.0: four sides, one core

The studio's first multiplayer title and its first on-chain perk. A four-player arcade shooter on a square table, playable now, with extra lives for CCFF00 holders on Robinhood Chain.

QUADRAPHONIC is live. Play it in your browser.

The idea

Take the gun from the bottom of a Galaga screen and give it three neighbours. The arena is a square. You sit on one edge; the player across from you plays upside down; the two beside you play sideways. Everyone is at the bottom of their own screen, the way a table works, and everyone shoots inward at the same core.

Level one is Breakout: a four-fold symmetric wall of bricks, steel and crystal. From level two a portal opens in the centre and sends invaders back out at whichever side it likes. Every fifth level the Monolith takes the middle, one face per player, and it turns.

Tables

Six ways to sit down:

  • Solo and local 2P (one keyboard) run entirely in your browser and work offline.
  • 2P co-op, 2P versus, 4P teams and 4P free-for-all run on a first-party relay at relay.madcoolgames.com. Create a table, share the four-letter code or the link, start. Empty seats become bots (easy, normal or hard). If someone drops, their seat plays on autopilot and the other three keep going.

In versus modes the core is a shield until half of it is gone. Then every shot that crosses the table counts.

The wallet, and what it does not do

This is the studio's first game that reads a chain. Link a Robinhood Chain wallet (any injected wallet, or paste an address) and every CCFF00 token you hold is an extra life, up to five, on top of the standard three.

What it does not do: it never asks for a transaction, never writes to chain, never sells anything. Balances are public, so a pasted address counts for solo play; online tables grant the bonus only to a wallet that signs a login message, so nobody plays with someone else's lives.

Under the hood

TypeScript, Canvas 2D and WebAudio, about 80 KB, no runtime dependencies. One deterministic simulation runs in the browser for solo play and inside a Cloudflare Durable Object for online tables, at 20 Hz, server-authoritative, with clients interpolating at 60 fps. The 16-bit palette, the 5×7 bitmap font and every sound are drawn and synthesized in code. Motion honours prefers-reduced-motion.

QUADRAPHONIC is also embedded at madcoolcrypto.com/arcade, the network's Robinhood Chain outlet, where the holder perk belongs. Source: Will-Amplify/quadraphonic. Code written with Claude and reviewed by a human before release.