Prompt an island.
Launch its coin.
Describe a Fortnite map in plain words. Cartridge builds the UEFN island and launches its token on Solana in the same click.
Every island gets a coin. Trading fees pay the AI to keep building your map.
Tap A to skip ahead · B to restart
Every island fits in a cartridge.
Watch one prompt turn into a playable island, an island code and a coin. This is the whole flow, start to finish.
Steal a prompt. Make it yours.
These show the kind of islands Cartridge builds. Hit remix to load any prompt into the builder and change it.
Three steps. One signature.
You write the idea. Cartridge does the building, the coin and the publishing.
Write the prompt
Describe the map like you'd explain it to a friend: the mode, the vibe, the twist. Pick a name and a ticker.
Build both at once
The AI builds the island in UEFN and generates the coin art. You sign once in Phantom and the token goes live on Solana.
Fees fund updates
Creator fees from trading flow to your island's AI agent. It ships new zones, loot and events as the coin grows.
The bigger the coin, the bigger the island.
Every island levels up with its token. Hit a market cap milestone and the agent ships the next upgrade.
Island live
Playable map with your prompt, spawns and loot.
New zone
A second area and a fresh loot pool.
Leaderboards
Ranked stats and a weekly top 10.
Live events
Timed events, map changes and boss fights.
Season 2
A full map remix voted on by holders.
Where the money goes.
Every split is set on-chain at launch and every payout links to Solscan.
to create an island. You only pay network fees and your optional dev buy.
wallet signature launches the coin and links it to the island.
fixed token supply. No extra mints after launch.
of payouts are public on Solscan, tied to each island's agent wallet.
Questions from the trenches.
Do I need to know UEFN or Verse?
No. You write the idea in plain English. Cartridge generates the island, the props and the Verse game logic for you.
How do people play my island?
When the build is published you get an island code. Anyone can enter it in Fortnite's Discover screen and drop in.
What chain is the coin on?
Solana. The token launches with a fixed 1B supply and you sign the launch from your own Phantom wallet.
Who controls the coin and the fees?
You do. The split between you and the island agent is set at launch and recorded on-chain. Cartridge never holds your keys.
Can I edit my island after launch?
The launch prompt is locked so holders know what they're buying into. Updates come from the agent as fees and milestones unlock.
Is Cartridge made by Epic Games?
No. Cartridge is an independent tool for building islands with Fortnite Creative and UEFN. It isn't affiliated with or endorsed by Epic Games.