OPEN WORLDX1CITYReal Blockchain. Real AI Agents. Real City.
A unified open world built on X1 Blockchain and rendered in Unreal Engine 5. X1City is the on-chain hub for DeFi, NFTs, AI agents, and property — owned, rented, and built on by anyone. Walk into the city. Stake land. Open a building. Run your protocol from inside. The architecture is being laid now — buildings, streets, terminals — and the gates open as it scales.
x1.city Domain Secured Unreal Engine 5 X1 Mainnet Token-2022 Claude API Anchor 0.32
Domain x1.city SECUREDEngine UNREAL ENGINE 5City Status PHASE 1 — CONSTRUCTIONLand NFTs DESIGN PHASELab Work LIVE ON X1LB Marketplace LIVEBrains Farm DEPLOYEDLP Pairing OPERATIONALDomain x1.city SECUREDEngine UNREAL ENGINE 5City Status PHASE 1 — CONSTRUCTIONLand NFTs DESIGN PHASELab Work LIVE ON X1LB Marketplace LIVEBrains Farm DEPLOYEDLP Pairing OPERATIONAL
UE5
Render Engine
SVM
X1 Mainnet
NFT
Land & Property
PHASE 1
In Construction
City Preview
The Architecture Is Being Laid
A unified open world in Unreal Engine 5. The exteriors are coming together — towers, streets, terminals, lighting. Phase 1 is the architectural pass: the city skeleton. Interiors, properties, and on-chain interactables come next. Buildings will be tokenized as NFTs and made available to other projects to build inside.
// X1CITY — UNREAL ENGINE 5 — ARCHITECTURE PASS3D OPEN WORLD
Engine
Unreal Engine 5
Phase 1 Scope
Exteriors & Streets
Future Scale
Unlimited Open World
City Layout
One Unified City. Open to Build On.
X1City is a single open world — designed and built top-to-bottom by X1 Brains. The architecture is laid first: buildings, streets, lighting, terminals. Then the gates open. Parcels and properties become NFTs, and other projects can rent or buy space to build their own protocols inside the city. The economy of X1City is the city itself.
Zone 01 · Live on x1brains.io
The Financial Quarter
DeFi & Lab Work
The first zone with real on-chain anchors — the full x1brains.io stack. Track your portfolio (XNT, SPL, Token-2022, XenBlocks). Visit the LB NFT Marketplace to scan, list, buy, and mint LB tokens. Burn BRAINS in the Incinerator to earn LB Points and ascend the leaderboard. Collect weekly prizes in the Rewards Hub. Browse citizen tiers and rankings via Cyberdyne Unlimited. Trade liquidity pairs on the Brains LP Pairing Marketplace. Stake LP into the new Brains Farm. Walk into a building in this zone and you're inside live DeFi running on X1 mainnet today.
Portfolio TrackerLB NFT MarketplaceIncineratorRewards HubCyberdyne UnlimitedLP PairingBrains FarmLab Work
Zone 02 · For Other Projects
Tenant Districts
Rent or Own
Whole districts and individual properties are being designed for other projects to occupy. Buy a parcel, lease a building, run your protocol from inside the world. Each property is an NFT with smart metadata — your storefront, your dApp, your community space all sit at a real address. As the city grows, so does your footprint.
Land ParcelsBuilding DeedsLease ModelSmart Metadata NFTsProject Onboarding
Zone 03 · City Core
City Hall
The Shared Hub
A central plaza connecting every zone. Office buildings host live dashboards. Walk up to a terminal — check network status, browse on-chain data, jump to any dApp running in the city. The hub is where citizens, agents, and tenant projects intersect. As more projects move in, the hub becomes the directory for the whole city.
Live DashboardsNetwork TerminalsCity DirectoryCross-Project Portal
Zone 04 · Living City
NPC Agents
The City Talks Back
The city itself is populated with AI-powered NPC agents you can walk up to and interact with. Shopkeepers, guides, terminal operators, district characters — each driven by the Claude API and aware of what's happening on-chain. Ask the LB Marketplace clerk what just listed. Talk to a city guide to find a tenant project. The world responds because the city is alive, not just rendered.
Claude API NPCsOn-Chain AwareWalkable InteractionsIn-World Dialogue
"Build the city tight. Place the buildings. Light it up. Then open the gates and let other projects move in. The economy of X1City is the city itself."
— X1 Brains · Build Notes
Already Shipping
Live on X1 Today.
X1City is being built on top of a working DeFi stack — not a roadmap. These are products you can use right now on X1 mainnet, all built by X1 Brains. The city renders the world; this is the engine underneath.
01
Lab Work
// LB Mint Program
Burn BRAINS, pay XNT, mint LB — a Token-2022 asset capped at 100,000. Tier-priced, deflationary by design. The Xenblocks Amplifier lets XNM, XUNI, and XBLK holders earn bonus LB. The first Proof of Burn token on X1.
02
LP Pairing & Farm
// Brains Pairing + Brains Farm
Trustless peer-to-peer liquidity pool creation on XDEX — list your token, get matched, the pool spawns automatically. The new Brains Farm pairs with this — stake LP tokens and earn rewards across 30/90/365-day lock tiers.
03
Hub & Marketplace
// x1brains.io
Portfolio tracker for the entire X1 ecosystem, the LB NFT Marketplace with list/buy/cancel/boost, the Incinerator burn engine, the Rewards Hub with weekly prize vaults, and Cyberdyne Unlimited — the citizen registry and tier leaderboard.
Property Economy
The City Is the Asset.
Every parcel and every building in X1City will be an NFT with smart metadata. Land scales your buildable footprint. Buildings host protocols. Properties can be leased, upgraded, and traded. The more the city grows, the more the assets inside it appreciate — for the projects that built early, and the citizens that own land.
For Citizens
Own a city plotLand NFT
Hold a building deedProperty NFT
Tokenized LP positionsLiquidity NFT
Lease or sellOpen Market
Footprint scalesWith Holdings
For Tenant Projects
Rent a buildingRun dApp Inside
Buy a parcelPermanent Address
Protocol storefrontIn-World Access
Branded zonesBy Arrangement
Direct exposureCity Foot Traffic
CITY GROWS → PROPERTY VALUE COMPOUNDS | LAND + BUILDINGS = X1CITY ECONOMY
"The city itself is the product. Every building has an address. Every address can host a protocol. Every protocol brings citizens. The flywheel is the architecture."
— X1 Brains · Build Notes
The City Is Alive
NPC Agents Inside X1City
The agent layer in X1City is built into the world itself — not as a service citizens register for, but as characters that populate the city. Walk into a building, walk past a terminal, approach a shopkeeper — they respond. Each NPC is powered by Anthropic's Claude API and connected to live on-chain data. The city talks back.
City Guides
Walk up to a guide in City Hall. Ask where the LB Marketplace is, what tenant projects just opened, or how the LP Pairing works. The guide answers in plain language, with awareness of what's actually happening on-chain at that moment.
// CLAUDE API · CITY DIRECTORY
Building Operators
Each major building has an in-world operator — the LB Marketplace clerk, the Lab Work technician, the LP Pairing concierge. They know what's listing, what's burning, what just minted. You don't read a dashboard — you ask the room.
// CLAUDE API · ON-CHAIN AWARE
District Characters
As tenant projects move into the city, their districts get NPC characters too — operators, scouts, shopkeepers tied to whatever protocol runs there. The agent layer scales with the city. The more buildings open, the more voices the world has.
// LONG-TERM · GROWS WITH CITY
City Economy
How Value Flows in X1City.
X1City's economy is built around the city itself — its land, its buildings, and the protocols running inside them. Citizens own pieces of the world. Tenant projects build on rented or owned property. The DeFi engine on x1brains.io powers the financial core. Every layer reinforces the next.
LAYER 01
DeFi Core
Lab Work, LP Pairing, Brains Farm, Incinerator, Rewards Hub. The on-chain engine that runs underneath the city — already shipping on X1 mainnet.
LAYER 02
Property
Land parcels and building deeds as NFTs. Citizens own the city. Tenant projects rent or buy space to host their dApps inside the world.
LAYER 03
Network
BRAINS as the native ecosystem token. LB as the deflationary asset. XNT as gas. Cross-protocol liquidity through the LP Pairing Marketplace.
FUTURE
NPC Agents
The city itself populated with AI-powered NPCs — guides, operators, district characters — driven by Claude API and aware of live on-chain state. The world responds when you walk into it.
On-Chain Assets
NFTs With Smart Metadata
Land, property, and LP positions inside X1City are NFTs — but not static ones. Smart metadata makes them dynamic. The more land you hold, the more you can build on it. Buildings can host protocols. LP positions can be sold as a single asset.
Land Parcel NFT
City Plot
Own a piece of X1City. More land = more buildable space. Launch protocols on your parcel. Host games. Rent to other builders. Your footprint in the city scales with your holdings.
Property NFT
Building Deed
Own buildings inside the city. Lease them out. Run protocols inside. Host games or storefronts. The NFT marketplace evolves with the building — start small, expand the footprint as the city grows.
Liquidity NFT
LP Position
Via the Brains LP Pairing Protocol — LP positions tokenized as NFTs. An entire pool position transferable as a single asset. DeFi meets true ownership.
Blockchain Foundation
Native to X1. Not Ported.
Built from the ground up on the X1 Blockchain — SVM-based, low-cost transactions, high throughput. Every land deed, building, LP pair, and protocol lives here. Permanently.
Blockchain
X1 Mainnet
SVM-based · Low-cost txns
DeFi Layer
Lab Work
LB Mint · Token-2022
Liquidity
LP Pairing + Farm
Trustless on XDEX
Marketplace
LB NFT Marketplace
List · Buy · Boost
Render Engine
Unreal Engine 5
Open world · Phase 1
City Domain
x1.city
Secured · Building now
The Founder
Built by X1 Brains.
X1City is a solo build. The idea was sparked in a Telegram conversation between a few X1 builders earlier this year — but the work of designing, building, and launching the city is being done by X1 Brains. Architecture, DeFi, NFT, marketplace, properties — all one shop.
X1 Brains
Founder · Architect · Builder
Creator of x1brains.io — the most complete hub on the X1 Blockchain. Portfolio tracker for XNT, SPL, Token-2022, and XenBlocks. LB NFT Marketplace. First Proof of Burn token on X1 (Lab Work / LB Mint). Incinerator burn engine. Rewards Hub with weekly prize vaults. Cyberdyne Unlimited citizen registry. Brains LP Pairing Marketplace. The new Brains Farm staking program. #3 Top Builder on X1. Cyberdyne Approved. Now designing and building X1City in Unreal Engine 5 — the next chapter.
▮ "One builder. One city. Build it tight. Ship what's real. Open the gates when the architecture is done."
Coming Soon
Walk Into X1City
The city is in construction. Property NFTs and the in-world NPC agents come online as the architecture phase wraps. Until then, the live DeFi stack is at x1brains.io — the foundation X1City is being built on.