The skyline is the chart.
Every building in the city is a real pump.fun coin. Pick an empty lot, launch a coin from it, and its building rises and falls with the coin's market cap, live.
Build a building
- Pick an empty lot. Click Build, then any glowing lot. Skyline Row faces the plaza, Downtown rings it, the Outer city is everywhere else.
- Name your coin. Name (up to 32 characters), ticker (up to 10), a picture, optional links, and an optional first buy in SOL.
- Approve once. One approval in your wallet signs everything: the lot's toll, the coin's creation on pump.fun, your first buy, and the locked fee split.
- It goes up. We check on-chain that the coin exists and the split is locked, then your building breaks ground. From then on it follows the market cap.
Lots & tolls
The city has 1,260 lots on a 12 × 12 grid of blocks. Where you build sets the toll. The toll is swapped to $BRICK and burned in the same approval as your launch: the city never holds it.
| Zone | Lots | Toll |
|---|---|---|
| Skyline Row | 24 | 1 SOL |
| Downtown | 84 | 0.25 SOL |
| Outer city | 1,071 | 0.02 SOL |
| Old Town | 81 | not for sale |
One lot holds one coin, forever. Buildings are never evicted or resold. Besides the toll you pay Solana's normal account rent and network fees (about 0.012 SOL), plus whatever first buy you choose.
Creator rewards: 80% to you
Every trade on a pump.fun coin pays a small fee, and part of it goes to the coin's creator. On the bonding curve that's 0.30% of every buy and sell. After graduation to PumpSwap it's 0.05% to 0.95% depending on market cap. Traders pay it as part of their trade.
Locked at launch
The split is set with pump.fun's own fee-sharing program in the same transaction that creates your coin, and it's locked right away. Nobody can change it afterwards: not you, not us. The coin's on-chain "creator" is the split itself, so rewards follow it automatically, before and after graduation.
Paid out every hour
Rewards collect in the coin's vault. Every hour the city pays out any vault holding 0.01 SOL or more, using pump.fun's own distribute instruction: 80% to the launcher and 20% to the city wallet, straight into the wallets. You don't have to claim anything. The city pays the network fee. Every payout shows up in the City pulse with its transaction.
Trade from any building
Click a building to open its card. Buy with SOL, or Sell 25%, 50%, 100% or any amount you hold. The card shows your balance and a quote from pump.fun before you approve. Buys push the building up; sells bring it down.
- Trades go through pump.fun's own programs: the bonding curve, or PumpSwap after graduation.
- The city adds no fee. pump.fun's normal trading fees apply.
- Your wallet signs; the city relays the transaction and resends it until it lands. You can always trade the same coin on pump.fun directly.
How buildings move
Two storeys per doubling
1 storey up to $4K market cap, then +2 every time it doubles: $8K is 3, about $70K (graduation) is 9, $1M is 17, $100M is 30. Capped at 60. The same scale for every coin.
Live
Prices come straight from pump.fun trades on Solana, within a second or two, and are checked against the chain every minute.
Milestones
$100K, $250K, $500K, $1M and up are announced in the City pulse. So are graduations to PumpSwap.
Haunted houses
A coin under $4.5K with no trades for 12 hours goes dark and haunted. One trade brings the lights back. Buildings are never evicted.
If the price feed drops, buildings freeze and the city says it's reconnecting. Missing data never shrinks a building.
Old Town
The north-east corner holds coins that were trading on pump.fun before the city existed, like Fartcoin, CATE, PARASITE and AIRPAD, so the city is alive from day one. They're guests: placed by the city, not for sale, no toll, and their fees stay exactly where they were. Being in Old Town doesn't mean a coin's team is involved with the city.
$BRICK
$BRICK is the city's coin, launched on pump.fun. Its building is the tower in the middle of the plaza, and it follows $BRICK's market cap on the same scale as everything else.
- Every building burns $BRICK. Each lot's toll buys $BRICK and burns it, in the same approval as the launch. Burns reduce $BRICK's supply for good, and each one is posted in the City pulse with its transaction.
- The HUD shows the total $BRICK burned and the SOL spent on tolls.
The dev wallet
$BRICK is launched from 6ddF5B57F2YdPtQg6TcgNCEiTM8tQWCAaVXdxXvkuyYf, which is also the city wallet that receives the 20% share. The dev holds for at least 72 hours after launch, then sells no more than 10% of the original dev buy per day, announced 24 hours ahead. Every move is visible on-chain.
Verify it yourself
Everything the city does happens on Solana, through pump.fun's programs. Check any building:
- Copy the coin's contract address from its card and open it on Solscan. Its creation transaction contains pump.fun's create, the fee-sharing config and the locked update, all in one.
- The fee-sharing config is owned by pump.fun's fee program, lists exactly two wallets (the launcher at 80%, the city wallet at 20%) and is locked (admin revoked). Every hourly payout transaction shows the 80/20 amounts.
- Toll burns and payouts are linked from the City pulse with their transactions.
| City wallet (20% share, $BRICK dev) | 6ddF5B57F2YdPtQg6TcgNCEiTM8tQWCAaVXdxXvkuyYf |
| Ops wallet (pays payout gas only) | 4LtETGQs2tFvddNeji7WZVpMUfaeMukCVbzsEm5UJS62 |
| pump.fun program | 6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P |
| pump.fun fee-sharing program | pfeeUxB6jkeY1Hxd7CsFCAjcbHA9rWtchMGdZ6VojVZ |
| PumpSwap program | pAMMBay6oceH9fJKBRHGP5D4bD4sWpmSwMn52FMfXEA |
| City lookup table (makes the launch fit one transaction) | 3z1DVfwUmYRiM5UgxAxByq4ts6u58rQDfBe9SPPUhU2M |
| $BRICK | announced at launch |
The city never holds your SOL or your tokens. Your wallet signs every transaction, and the site shows exactly what it asks you to approve.
Risks, plainly
- Memecoins are extremely volatile. Most go to zero. Nothing here is financial advice.
- Bots trade every new pump.fun coin, including yours. Expect instant buys and sells.
- Market caps are thin and easy to move. A tall building is not a safe coin.
- Locked means locked for us and for the launcher. pump.fun itself keeps admin powers over its own programs.
- Prices come from pump.fun trades and public data sources; they can lag or pause. Buildings freeze rather than guess.
- Being in Old Town doesn't mean a coin's team endorses the city.
FAQ
Can I sell the coin I launched?
Yes, any time, from its building's card or on pump.fun. Nothing locks your tokens. Only the creator-fee split is locked.
Where do the creator rewards come from?
From pump.fun's trading fee. Every buy and sell of your coin pays a small creator fee, and your coin's creator is the locked 80/20 split. The city pays out every vault over 0.01 SOL each hour.
Why do I approve two transactions at once?
When a toll applies, your wallet signs two transactions in one approval: the toll (buy $BRICK and burn it) and the launch. The toll lands first; if the launch then fails, retrying reuses the toll you already paid.
What if the page reloads halfway?
Reload, connect the same wallet and open the same lot. The page remembers your signed launch in that tab and finishes it; it never makes you pay twice or creates a second coin. If you closed the tab after paying a toll, the lot and the toll stay reserved for your wallet for 30 minutes: reach out on X and we'll finish it for you.
Does the city take a fee on trades?
No. Buys and sells from building cards pay only pump.fun's normal fees.
Can my building be taken away?
No. One lot holds one coin forever. A dead coin becomes a haunted house, and it lights back up the moment someone trades it.