Scaling Fun Onchain

Quick Start Guide

Get up and running with B3 SDK in under 5 minutes

Ecosystem of Products

B3 is an portfolio of products designed to bring the next generation of apps, creativity, and commerce onchain.

Protocol Layer

The B3 protocol layer is the multi-blockchain backbone of the B3 ecosystem.

Ecosystem Layer

The B3 ecosystem layer is the open access developer infrastructure, tools, and services for building on B3.

Application Layer

We don’t just build tooling, B3 ships consumer apps that bring fun onchain & drive value back to the $B3 token.

B3 AppChains The Hyper-Scalable Superchain

B3 is not just another chain, B3 connects fun experiences - games, apps, consumer projects - into a modular, scalable ecosystem that’s open, connected, and ready to grow. Created by a team of Base/Coinbase alumni and OG Ethereum contributors.

modular infra pick your stack, settle anywhere—base, ethereum, solana, more.
multi-chain network launch on b3 mainnet or spin up your own gamechain with built-in support.
superfluid liquidity built-in primitives for instant transactions, rewards, and cross-app experiences.

Secured by Base

B3 operates as an L3 that settles on Base, providing dedicated blockspace specifically for gaming with lightning-fast transactions and sub-cent fees.

Multi-chain Network

Appchains settle onto B3, with our protocol infrastructure abstracting away the complexity of dealing with multiple chains.

The Horizontally Scaling Appchain

Learn about B3’s unique appchain architecture, the most scalable way to build onchain.

Power to Developers

Build with tools, sdk, docs, and real support that let you go from zero to live in record time. Explore the B3 SDK to immedaitely build exceptional onchain experiences:

Free Data APIs

Free, consolidated & rich data APIs & indexing on B3.

B3 SDKs

Access users, liquidity across chains, launch tokens & more.

What You Can Build

Instantly onboard players with embedded smart accounts—just one click and they’re in the game.

Know Your Player’s Identity

Unlock instant access to player data across the ecosystem and their onchain gamer data.

Scale Your Game

Deploy Onchain Leaderboards

Create competitive rankings tied to real gameplay data and cross-game achievements.

Create Custom Achievements

Create onchain achievements tied to gameplay, loyalty, or community actions. Let players wear their wins across the ecosystem.

Launch Instant Tournaments

Spin up tournaments instantly to boost retention, drive competition, and monetize your game.

Enable Wager Duels

Allow players challenge each other in real-time PvP. Add wagers, XP, or prizes to every match.

Create Exclusivity with Token Gating

Enable users to unlock exclusive content, game modes, or perks based on NFT or token holdings.

Send Onchain Notifications

Trigger wallet-based alerts tied to gameplay, achievements, drops, or events to re-engage users.

Unlock New Ways to Monetize

Accept Payments Without Friction

Enable users to make purchases with no KYC using fiat or ANY token on ANY chain. It’s the easiest way to pay.

Create Native Game Tokens

Easily create custom tokens that power progression, rewards, or ownership—natively tied to your game logic.

Turn Any Asset into a Marketplace

From achievements to skins to user-generated content, turn any in-game asset into a collectible that players can trade.

Why Choose B3?

Fast and Cheap

Settled on Base

Scalable

Hyper-Operable

Open Ecosystem

Community & Resources

Discord Community

Join our developer community for support and discussions

GitHub Repository

Contribute to the project and report issues