The meta wallet for Cardano
  1. mobile and
    desktop web-app
  2. open-dapp
    ecosystems
  3. friendly for
    beginners
  4. full lab for
    developers
  5. unlimited
    connectivity
Launch
GameChanger
Non-custodial Zero-install Wallet scripts URL-JSON Connector Intent-based Protocols No Silos, No Web2.5 Decentralized Backend
SCROLL
WHY

To break the chains holding us back

Cardano eUTXO model is rock-solid Web3 but inadvertently encourage the formation of centralized ecosystems, fragmented protocols and dapp over-empowerment as side effect of it's simplified on-chain footprint and sealed determinism.
THE PROBLEM

The UTXO model with on-chain validators instead of fully-deployed on-chain smart contracts, while improving many aspects from EVM blockchains like Ethereum, it can inadvertently encourage centralized ecosystems of vendor and complexity locks, fragmented and opaque deployments and dapp over-empowerment over users.

Zero composability, hard to build collaboratively
Why Cardano is so hard to integrate?
Code fragmentation, language-specific SDKs
Why I cannot control what data to share to dapps?
is hard for dapps to let others participate in revenue as in EVMs
Fragmented liquidity. Batchers, siloed protocols and services
Why we store so much data off-chain?
Vendor-locks, know-how barriers
Why we cannot sign multiple transactions in bulk?
Reverse engineering to integrate
Where is the off-chain code of this dapp?
If this dapp is decentralized, why there are no other frontends?
P2P protocols exist without P2P-ready wallets
If it is decentralized, why everything runs only in your backend?
Why dapps control all my UTXOs?
I am forced to sign transactions I cannot modify
Why dapps need to know my address and balance?
Why wallets are injecting code on websites?
Why I cannot connect beyond desktop?
Backend-fanatic ecosystem, user is not at center
Why I cannot see what a dapp is doing with my wallet?
Cardano can do better...
THE SOLUTION

A standard to foster open ecosystems

GameChanger Wallet design redrives power to users by helping dapps to publish their full intent, protocols and connections on-chain with GCFS and/or client-side with the Universal Dapp Connector (URLs) so their code remains always open and available. It makes code less fragmented, easier to understand, audit and reuse with GCScript DSL (JSON).

...and this openness give us maximum connectivity — to put Cardano beyond desktops, into the real world.

GCScript DSL
JSON syntax, intent based protocol logic, open, inspectable, editable wallet scripts. Interpreter + debugger. Deterministic, permissioned. Complete eUTXO function set out of the box
“One simple language to speak them all.”
Universal Dapp Connector
URL + JSON connectivity across devices & channels. Integrate Cardano anywhere. Unlimited possibilities
“Meet a world beyond CIP-30 wallets.”
Collaborative ecosystem
No more reverse engineering. No more vendor locks. Any dapp becomes open for you to learn, fork, and re-deploy. Monetize your reusable code.
“Composability at wallet layer.”
Sovereign Transaction Builder
Intent-driven. Dapps/agents suggests, you build the transactions. You are in control.
“Own your keys, own your actions”
Zero‑install PWA
Mobile and desktop. Burner and Gift wallets to enable 1-click/scan onboarding.
“Onboard in seconds.”
Decentralized Backend
Powered by the Dandelion Network, choose from official and community nodes. Became a DNO and earn with your participation
“Horizontal scaling by the community.”
Keep dapp protocols open
To audit and customize
Keep L1 deterministic
URL / QR / NFC / air-gapped connections
Read More/Less
USE CASES

The most versatile wallet

Choose your preferred use case. Get instant superpowers.

Beginner
Fast onboarding. NFT and tokens as colored cards. Ephemeral, password-less wallets to get you started.
“Fast onboarding. There's room to grow.”
Zero‑install PWA one-click onboarding Burner and Gift wallets Game-inspired colored cards Smart Send NFT Creator Stake Pool and Vote Delegations NFT & Token Viewer
Developer
Integrated code editor for rapid prototyping, testing and building open protocols. URL/QR/Dapp generator from GCScript DSL code. Live debugger, console and memory explorer. Connections and wallet UI based on DSL.
“Inspect, edit, fork, deploy. Collaborate. Repeat.”
GCScript DSL (JSON) In-browser IDE Connector debugger + console Plutus & multisig 1-click HTML5 dApp generation Link/QR/NFC connections IPFS deployments GCFS deployments(on-chain) Intent-based Transaction Builder Mainnet & Preproduction Testnet
Check out our official documentation plus 85+ code examples Go to Docs
Educator
QR wallets in bulk for events and QR hunt mechanics. Built-in code editor with examples for classrooms. Zero-installs, no dependencies, 1-click dapp generator
“For hackathons, workshops and classrooms”
Zero‑install PWA Code editor Step-by-step script debugger 85+ runnable examples Gift Wallets Inspectable JSON scripts Share workflows via URL/QR Learn by forking the UI itself
Host the next wave of sovereign Web3 education and events Education Brief
Merchant
Integrate Cardano everywhere, on websites, social platforms, emails, screens, printed paper, items, merch, and hardware devices. Static (reusable) URL/QR/NFC connections for payment requests and more. URL redirections for notifications. Mobile-ready. Built-in NFC tag writer, QR generator and printer with thermal paper support.
“Make crypto usable — in the street.”
Mobile and Desktop URL / QR / NFC payments URL "webhooks" QR printer, thermal paper support NFC tag writer Zero-installs, 1-click/QR onboarding Air-gapped connectivity Tokens + Stablecoin support Open protocols Advanced integrations with Unimatrix Sync
Point of Sale example using M2Tec Paypad (2022) Watch
Stake Pool Operator and dReps
1-click/QR scan Stake Pool and dRep delegations. Integrate on websites, events, social media, everywhere. Users can setup multi-delegation portfolios. Dapps can do as well by leveraging on the Universal Dapp Connector and Workspaces.
“Delegations, no special dapp required”
Multi-delegation 1-click/QR scan delegations For Stake Pools For dReps Direct integrations, no dapps Mobile and Desktop Decentralized backend
Stake pool delegation via QR, example by ARP Radio (2022) Read Post
Multisig Peer
Strong multi-signature support. Shared treasuries, "2FA" addresses, remotely-controlled addresses, all through Workspaces. P2P co-signing between peers through shareable links. In-bult transaction signing. Services and integrations with Unimatrix Sync and Universal Dapp Connector.
“P2P multisig.”
Multisig-ready Workspaces 1 link, N peers Mobile and desktop all wallet types supported Live key witness syncs P2P - No dapps required Signing bots Minters Ejectable-custody DAOs
Dapps like Moments social platform leverage on Unimatrix Sync Go to dapp
FEATURES

Everything you will ever need

Taking your first steps on Cardano? We have you covered

Friendly for beginners

Inspired by items in video games, colored cards show your token, and NFT balances. Pick cards to make multi-recipient transfers on Smart Send and airdrops on NFT Creator. Compare cards to verify what you spend or earn on your transactions.

Assets represented as colored cards

To Manage
To Transfer
To Mint
To Verify
A gamified wallet UI

Smart Send

Pick which assets you want to transfer to each recipient address. Inspired on item trades in video games, colored cards help you understand what you have, and what you send. Edit metadata to change transaction title, description and attach CIP-20 messages other wallets can read

Intuitive transfers

Assets represented as colored cards

Multi-Recipient
Multi-Asset
Metadata

NFT Creator

The self-sovereign in-wallet minter to create collections or single NFTs with your own keys and without leaving your wallet. Drag-and-drop reordering, batch-apply metadata using text templates. Pick and assign assets to mint and drop them to multiple recipients, all in one transaction. Edit metadata to attach CIP-20 messages.

Mint on your own

Assets represented as colored cards

Multi-asset
Multi-recipient drops
No third-party keys
All wallets supported
All your preferences on a single app
12,15,24 seed phrase wallets
QR wallets
Hardware wallets
Browser extension wallets
Mobile wallets
Burner wallets
Gift wallets
Read Only
Remotely Controlled
Multisigs
Security through simplicity
Universal connectivity
A Universal Dapp Connector connects you from desktop and mobile with dapps and more
Dapps
Devices
Social Platforms
Links
Air-gapped
QRs
NFC
Connect to the world
Multi-Address
With Workspaces you can create multiple addresses and group them as you wish
Single addresses
Hierarchical Deterministic
Multi-Delegation Portfolios
Enterprise Addresses
Anonymous
Shared Treasuries
Read Only addresses
Remotely-controlled addresses
Keep it as simple as you need
Multi-Signatures
Manage shared treasuries, co-sign transactions through links or dapps, control addresses remotely. Powered by Workspaces,Unimatrix Sync and our Universal Dapp Connector
Share a link. Sign. Forget
Multi-Delegation
With Workspaces you can delegate to multiple Stake Pools and DReps at the same time
Even anonymously
Bulk Transactions
With the Universal Dapp Connector users and dapps can handle multiple transactions at the same time. Mint self-sovereign NFT Collections, payrols, GCFS streams, get yourself ready to the new horizons
Limitless. Future-ready

Security that meets every use case

From hardware wallets to air-gapped connections, the more strict your security requirements, the more features we have to offer you along the way

Zero code injections
All CIP-30 / extension wallets inject JavaScript code on your websites to work. With our dapp connector we don't need to invade you like that
Auditable Dapp actions
Every action required by any dapps/agents is fully inspectable. No more black boxes, nor closed protocols
Rejectable data sharing to Dapps
Every data required by dapps/agents is fully inspectable and rejectable. With us, dapps don't need to know your addresses nor balances to work. Privacy matters
Sovereign UTXO Management
All CIP-30 wallets give full UTXO control to dapps. We don't
Private key encapsulation
Your keys are decrypted on ephemeral isolated Web Workers that can be closed upon use.
Ghost Mode
Avoid persisting your private keys on browser storage. This mode keeps them encrypted on RAM until you close the window/tab
QR and Hardware Wallet Support
Use Ledger and Trezor devices for maximum context isolation. Create Express wallets (QR, encrypted) on offline devices and then import them online with passwords to stop exposing your seed phrases in plain text.
Read More/Less
For Developers

A fullstack lab for developers

Use the built-in Playground IDE for rapid prototyping, testing and building of open-protocols. For dapps and integrations.

Join the ecosystem of open protocols

Dapps/agents connects to the wallet by sending their intents over URLs. After user approval and task execution, JSON data is exported back in URLs. These open protocols are written in a scripting language called GCScript DSL (JSON) and are executed in-browser by the Universal Dapp Connector interpreter. Developers write, test and deploy these wallet scripts using Playground IDE.

Go to Playground IDE Read the Docs
The in-browser “cardano-cli”. The "PAB" for the web.

Universal Dapp Connector

Through universal building blocks like URLs and JSON, it connects all wallet types with intent-based open protocols written in GCScript DSL and by-design meant to be executed at client-side in order to avoid centralization, vendor and complexity locks in dapps and integrations.

You can inspect with the built-in debugger the underlying GCScript DSL of any dapp/agent connection including the actions triggered by the wallet UI itself — open wallet as reference

CIP30 vs UDC COMPARISON
CIP-30 vs GameChanger Universal Dapp Connector diagram
Docs in Github
URL/QR/NFC/Web/Devices — Connect to the world

Integrated Code Editor

Edit in Playground IDE the inspected DSL code from any dapp/agent connection or from one of the included 85+ examples, test, and deploy your own.

01
Inspect
02
Fork
03
Edit
04
Deploy

Use the built URL/QR or the NFC writer for integrations. Create an HTML + JS dapp from your DSL code. Deploy on IPFS or GCFS, the on-chain file storage protocol.

BuilderFest 2026 Challenge in Playground IDE

GameChanger Playground IDE screenshot

85+ examples Go to Playground IDE
Zero-dependencies, Zero-installs, 100% online IDE
GCScript DSL
Our simple scripting language of universally-supported syntax (JSON) to offer an eUTXO toolkit out-of-the-box and aggregate other third party languages and tools, in order to keep protocols open, available and composable at client-side level.
40+ permissioned functions
30+ permissionless functions
Intent-based
Transaction builder
Helios compiler
Aiken-like Plutus parametrization
Plutus and native scripts
Certificates
GCFS
Workspace
Multisig
Support us! API Docs
"One common language to aggregate them all"
Multisig with Unimatrix Sync
Our decentralized, privacy-preserving, real-time transaction witness, sharing and pairing solution for multi-signatures or deferred signatures. Designed to power P2P multisignature transactions in-wallet and also to allow for third-party backends and frontents to became signer peers for more advanced usa cases such as signing bots, minters and more.
Decentralized
Privacy-preserving
Private channels
P2P signer peers
Signer bots
Minting services
Semi-centralized services
Remotely-controlled addresses
Real-time
NPM
P2P-ready. Dev-friendly.
GCFS: On-chain file storage
Our multi-transaction stream protocol to store filesystems on-chain on Cardano, for files even bigger than transaction size limit. This allows for permissionless, persistent, highly-available data and protocol code for dapps. GCScript DSL natively support it to write, read, search for files and import reusable community modules — the first "dapp store" on Cardano since 2022.
Write / Read / Search ops
Versioned updates
Cryptographically-signed
Self-sovereign
Data
Source Code
Governance metadata
Import protocol modules
Dapp/Protocol store
Minimal HTML UIs
Support us! API Docs
Highly-available and censorship-resistant dapps
Cardano GraphQL MKII
Our modern, optimized, full re-write of the legacy API service: the renewed Cardano GraphQL MKII API brings production-grade reliability, performance, security and extra features to backends but specially to client-side apps looking to decentralize further leveraging on a powerful general-purpose API layer vs custom, rigid and opinionated APIs.
New Cardano GraphQL
90% backwards-compatible
Ogmios wrapper
Koios-based cron jobs
Security
Features
Reliability
Easier to maintain
Support us! Github
The new GraphQL API for Cardano+
@gamechanger-finance/gc: NPM package + CLI
Our official GameChanger Wallet library and CLI for integrating in dapps, websites, social media and more. Generate standalone frontends, backends, URLs and QRs based on your GCScript DSL code.
HTML5 dapp generation
ExpressJS service generation
URL
QR
NPM module
CLI tool
NPM
Let's connect Cardano to the world
Dandelion Lite: Decentralized APIs
A project co-maintained by GameChanger Finance, a convenient way of deploying your own local Cardano Node and APIs, for students, builders and for joining the Decentralized Dandelion Network, a community-driven effort to decentralize Cardano services, like GameChanger Wallet . It eases the setup of most popular and required APIs, and reduce node/db syncronization times by using P2P volume snapshots.
Now you can register your node on-chain using a self-sovereign registration on GCFS for participating in decentralized peer discoveries on compliant apps.
Cardano Node
Cardano DBSync
Ogmios
Blockfrost
Koios
Cardano Token Registry
Cardano GraphQL MKII
P2P volume snapshots
Unimatrix Sync
Support us! Github
Join our network to keep Cardano decentralized
We want to keep releasing open source, we need your support !
Read More/Less
JOIN US

Cardano needs your help!

Rewarding active community members, keeping ecosystem open, sustainable, self-sovereign and centralization-free (*)

  1. Get
    rewards
  2. Earn on every
    transaction
  3. Add wallet to your
    dapp
  4. Share URL on
    social media
  5. Deploy your own
    backend node
For Cardano evangelizers

Share or Integrate

Get rewarded by sharing your referral link to onboard new users. If you are a developer, you can take advantage of integrating the wallet to share your referral link.

01
Create/Import a wallet
Mnemonic, Express, Hardware and Browser Extension wallet types are suggested
02
Copy your Referral URL
Go to Earn page and copy your generated URL
03
Share your Referral URL
On social media, events, and on your own dapps and integrations
Generate URL
For pioneering nerds

Deploy a Node

Collect rewards by offering your own Dandelion Lite node (or compatible) to help decentralize GameChanger Wallet and other services on Cardano. Mechanics here

01
Join us
Attend Dandelion Community governance calls
02
Deploy your Dandelion Node
Follow our suggestions for best experiences
03
Register on-chain
Write your self-sovereign registration using GCFS
Github Join us
(*) Program is valid until July 26, 2026 (our 5th Anniversary) and may be continued to a certain degree under our own discretion and based on the success of the program. Mechanics and terms summary in-wallet here . Under no circumstance GameChanger Finance Team, collaborators and associates are responsable for any loss, misinterpretation, lack of enforcement or individual alteration of the implementation of the referral program. Users must use non-ephemeral wallet types for their referral URLs in order to avoid losing access and control over those funds. We have been operating for free for almost 5 years and we are now kindly offering this collaborative reward program to active community members at a financial loss.
Read More/Less about the Rewards Program
COMMUNITY

Our community spotlight

Here to share the Web3 projects that excelled with their integrations.
Here to acknowledge the passionate, hard-working, pioneers that collaborated along the way.

ARP Radio
Discover the plethora of music in the Cardano ecosystem, then purchase, play, trade, and more! Led by the dRep SudoScientist — who has released gc-connect , great open-dapp boilerplate.
Powered by GameChanger Wallet and Dandelion Lite
Website
Moments
Moments is a decentralized social media platform where creators capture their ideas, share freely, and lock in ownership by minting posts on Cardano. Created by our friend and cherished community member Max Van Rossem.
Powered by GameChanger Wallet, Unimatrix Sync and Dandelion Lite
Website
M2Tec
Engineering specialist in payment systems. Integrating and building point of sale systems with cash and crypto. We help where we can to make payments and transactions run smoothly and effectively. — Led by Maarten Menhere, builder of hardware-dapps, also collaborated extensively with us and with Dandelion Lite.
Powered by GameChanger Wallet and Dandelion Lite
Website
Dandelion Network
The community behind the governance, operation and maintenance of the project we choose as decentralized backend. Special thanks to our friends Maarten Menhere, Quasar, Ratio, SudoScientist, Max Van Rossem, Javier Ribo and Roberto Morano for all your invaluable contributions all these years to Cardano
Github
WebBridges
Empowering communities through Cardano and emerging technologies — a human-first foundation for the Web4 era. Led by Juan Sierra, a long-standing Cardano community member and personal friend that has always collaborated with our projects
Website
Gimbalabs
An education hub aims to foster future code maintainers. Home of Andamio, educational platform chosen for our courses. Gave birth to Dandelion APIs by hub's co-founder Roberto Morano, and many other Cardano projects and developers.
Website
Mithrandir
We reward you for caring for the planet. At Mithrandir, we believe that the best way to add value is to help protect the environment and create life. That's why, for example, if you plant a tree, we reward you with a MITHR token.
Website

Host the next wave of sovereign Web3 education

Bring self-sovereign Cardano engineering into classrooms and builder events. Onboard at scale with QR wallets. Teach rapid iteration with open connectors and auditable scripts.

Education Brief
FAQ

Frequently Asked Questions

No. GameChanger is non-custodial: users keep control of their keys and signing. Burner and Gift Wallets' default address uses a pre-delegated key hash as means to care for Cardano consensus and as an ethical motivator to move funds to other supported type of wallets. That being said, users can still fully use and derive canonical main addresses on these wallet types using Workspaces if really needed.

CIP-30 injects JavaScript code in your websites. UDC don't, it uses JSON data payloads packed in URLs for connectivity, open intent-based protocols in GCScript DSL, and real-world integrations beyond desktop scope (QR/NFC/air‑gapped). A subset of DSL functions resemble CIP-30 API calls and can help porting across but these specs are not 100% equivalent as UDC is intent-based where CIP-30 is procedurally-based.

No. GameChanger focuses on lowering barriers with a browser-native environment and decentralized backend network of community-run nodes. If you can run a node, or want to learn how to do it, we encourage you to do so!

Yes: the Playground IDE lets you write, inspect, debug, fork and deploy GCScript DSL protocols/workflows from inside the wallet. These wallet scripts define the "intents" dapps and other integrations require users to execute on their browsers.

GCScript DSL JSON schema, DSL code behind the wallet UI, code examples, Unimatrix Sync, and official NPM + CLI helper package has been released as open source already . Next it follows the rest of the tooling and interpreter for standalone and third-party integrations.
Help us!, your support on adoption and funding rounds is crucial to keep building for you, let's collaborate!

Considering that users are responsible for what they agree to execute, and that the wallet is permission-based, yes, that’s the point. This pattern encourage users to verify the code ( the requested permissions ) behind dapps and integrations instead of blind-trusting brands and opaque code deployments. Scripts and connections are designed to be shared via URLs and QR codes as open, auditable and editable payloads.

We launched in 2021, 2 weeks after Nami, and lack of funding and support has always affected our outreach and time availability.
You had 5 years to support your fellow solo-builder here and help making this a standard of choice.
Where were you all this time we needed you? You complain but what stopped you from helping before?
Good news: we are still here trying to open-source for you!

Thank you for participating in the Beta Program!
Yes, Beta version is now deprecated as we have launched the production-ready v2 version.

Please migrate to Production v2 before it goes offline!

Here are the links:
Cardano Pre-Production Testnet Cardano Mainnet

Founder and solo-developer Adriano Fiorenza is an Entrepreneur & Senior Full Stack Developer with 15+ years of experience in software and IOT development.
With his team of collaborators delivered 10+ Catalyst projects, maintained open source projects for Cardano and ran countless hours of weekly live coding sessions, some workshops and talks.