How aiSports built a Fantasy Game on top of NBA Top Shot
When CJ set out to build aiSports, he didn’t just want to create another fantasy basketball app. He wanted to craft a completely new layer of gameplay - built directly on top of NBA Top Shot. Flow made that possible.
By tapping into Flow’s unique account linking and composability, aiSports lets Top Shot collectors become fantasy sports players in seconds. The result? A seamless, sticky experience that brings the Web3 fandom community to life.
What is aiSports?
Fantasy sports, powered by composability.
aiSports is a daily fantasy basketball platform where users draft lineups, compete in contests, and win prizes, including $JUICE tokens, aiSports NFTs and NBA Top Shot packs. But what sets it apart isn’t just the gameplay, it’s the way aiSports composes directly on existing Flow experiences.
Thanks to native account linking across Dapper Wallet and Flow Wallet, players can instantly connect their NBA Top Shot Moments to aiSports.
“With Flow, aiSports wasn’t just next to the NBA, it was now plugged into it.” - CJ, Founder of aiSports
Using Cadence smart contracts, aiSports integrates with NBA Top Shot’s FastBreakV1 to offload scoring and contest logic, while tapping into FastBreak’s large user base. This unlocks a new level of fantasy composability, where owning Moments directly influences your in-game strategy.
From ML Side Project to Composable Game Engine
CJ’s journey began in 2021 with a Web2 machine learning project that predicted fantasy scores. But when NBA Top Shot exploded during the NFT boom, CJ saw a bigger opportunity: What if fantasy basketball could be built on Top Shot?
He made that vision a reality by leveraging Flow native features:
- Account Linking: Seamlessly connecting with millions of NBA Top Shot users.
- Composable Contracts: Reads from Top Shot contracts to build a gameplay out of it.
- Native Escrows: Pools and distributes prize money in $FLOW securely and transparently thanks to theCadence programming language.
- Fast, Cheap Transactions: Keeps gameplay smooth with 0.8 second block time and sponsored gas fee thanks to Flow wallet.
Fast Break Vaults: Community-Powered Prizes
aiSports has introduced a new fantasy game mode that utilizes NBA Top Shot Moments. This new mode, built on top of Top Shot Fast Break, allows players to engage with their Moments in a brand new way.
NBA Top Shot’s Fast Break is a Fantasy sports style game where players pick lineups to beat a set score. Winners earn Top Shot packs & credit, with strategy depending on player usage limits by Moment rarity (e.g., Common = 1 play).
aiSports takes this further.
With Fast Break Vaults, users put $FLOW into prize pools. If your lineup wins, you split the pot with other winners - proportionally to your share of winning entries. No extra integration required. Just connect, play, and get rewarded.
It’s a great example of Web3 synergy: open data, shared smart contracts, and aligned incentives.
Getting Started Is Effortless
60 seconds is all it takes:
- Visit aiSportsPro.com
- Log in with your Flow wallet
- Draft a lineup and enter contests (free or paid)
- Win Top Shot packs, $JUICE tokens, and leaderboard glory
Whether you’re a hardcore collector or fantasy first-timer, aiSports makes it easy to dive in - and rewarding to stick around.
By the Numbers: aiSports in 2025
Powered by Flow’s infrastructure and Top Shot’s community, aiSports is gaining serious traction:
- 🧑💻 1,200 Monthly Active Users
- 🏀 150–200 Daily Contest Participants
- 📦 100 Top Shot Packs Given Away Weekly
- 💧 200 oz of $JUICE Airdropped Daily
- 🔗 Hundreds onboarded via Fast Break Vaults and account linking across Dapper wallet and Flow wallet.
This isn’t just growth - it’s retention. The deeper aiSports integrates with the Flow ecosystem, the more engaged its players become.
What’s Next: The Fantasy Layer of Flow
With core infrastructure in place, aiSports is scaling through:
- New Game Modes: Using Fast Break metadata for deeper strategy
- $JUICE Utility: Expanding into NFTs and DeFi integrations
- Cross-Platform Apps: Mini-apps launching on Telegram and Farcaster
- Flow EVM: Unlocking new composability across the wider Ethereum ecosystem
CJ’s vision? Make aiSports the fantasy layer of Flow - one that can plug into any collectible or onchain game.
Own the moment, own the game, and create your own version
CJ built aiSports solo - composing directly on NBA Top Shot using Flow’s open tools. You can too.
Flow gives developers the power to build with world-class IPs, not just around them.
Play today:
Start building on flow today and create an experience on top of global brands like NBA, NFL, UFC, Star Wars and many more.
