MADCOOLCRYPTO / CHAIN 4663
Reading the signal.
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Arcade
Play onthe grid.
QUADRAPHONIC, a four-player arcade shooter by MadCool Games, embedded here. Players sit on the four sides of a square and shoot inward at a core. Modes: solo, 2P local, 2P co-op, 2P versus, 4P teams and 4P free-for-all. Online tables run on a relay at madcoolgames.com.
build ecfcbf7483 · 1.0.0
Leaderboard
Best run per wallet, today (UTC) and this ISO week. Only runs the relay witnessed count: an online table's final state, or a solo run replayed from its input log on the relay, for a wallet that signed in. Daily and weekly winners are rewarded; the board lists a wallet by its first and last three digits and the name it last played under.
Today · 2026-11-01
No attested runs yet.
This week · 2026-W44
No attested runs yet.
RACK
Our own game, and a different kind of thing: a daily four-module puzzle written as one HTML file with no framework, no requests and no URLs in it at all — built to the size and shape a tokenURI could actually return. Nothing is minted and no wallet is involved; it is a static file this site serves. Why that is worth doing, and what it says about the chain's "on-chain" instruments, is on its page.
The welcome NFT
The first 100 wallets to connect here and sign the login message receive MadCoolCrypto Welcome, an ERC-721 on Robinhood Chain with its art on-chain, minted to them by us. Nothing to pay and no transaction to sign: the wallet signs one login message, which is what proves it is yours, and the mint is ours. Your place in line is recorded the moment you sign. Wallets do not index Robinhood Chain on their own, so once the mint lands this page asks yours to show the token (an "Add suggested NFT" prompt you approve); the contract and id are printed too.
1 of 100 claimed · 1 minted · contract 0x673b32bffc101B34777e3ef5FDbe83cB9e524421
Disclosure: MadCoolCrypto issues this collection and holds its owner key. We give it away; we do not sell it, and there is no market for it that we run.
What CCFF00 holders get
The game reads CCFF00.balanceOf(address) on Robinhood Chain (chain 4663) and grants one extra life per CCFF00 held, up to five, on top of the standard three. The bonus counts only for a wallet that signs a login nonce (EIP-191 personal_sign), in solo play as much as at online tables, so nobody can borrow another holder's lives by typing an address.
Read-only: no transaction, no chain write, nothing for sale. The game reads the chain and never writes to it; the welcome NFT above is minted by our own key, not by yours.
CCFF00 — ERC-721, 10,000 supply, contract 0x505a22ffed8d37ebe580ffd98d2cdb0021189146. Collection on OpenSea · Full game page on madcoolgames.com