The problem flappy-frog solves

🐸 The problem it solves

Many casual and social games online suffer from three main issues:

• Lack of transparency – rewards are often unclear or not verifiable.
• Weak social integration – scores and winners usually stay locked inside the game and are not shared with the wider community.
• Low sustainability & engagement – casual games often lack features like daily lives, notifications, or meaningful ways for players to support the ecosystem.

Flappy Frog, inspired by the iconic Flappy Bird, addresses these issues by introducing:

• A simple and familiar gameplay that everyone already knows, but reimagined with Web3 mechanics.
• A transparent and verifiable leaderboard stored on-chain.
• Automatic notifications to players about new rounds, winners, and heart refills.
• A donation section where players can support the project and increase the prize pool.

Coming soon: NFT-based rewards and a sponsorship section to make the game even more sustainable and engaging and leaderbord on IPFS.

Challenges I ran into

While building Flappy Frog we ran into several challenges:

• Smart contract prize distribution (payWinner)
  Initially, the payWinner function kept reverting because the caller wasn’t recognized as the owner. We fixed this by ensuring the correct ownership checks and simplifying the round restart logic.

• BigInt & custom round times
  Passing time parameters (e.g., “30 minutes”) as BigInt/seconds from the frontend was tricky. We solved this by creating utilities to handle conversions automatically.

-Scalable leaderboard with Redis
Redis had limitations when fetching a large set of users. We implemented a scan + batched mget approach to handle hundreds of players efficiently while keeping notifications fast.

-Reliable notifications
Making sure every player received their notification required a way to manage url + token for each user. We added a dedicated function to quickly retrieve them by fid.

Thanks to these solutions, Flappy Frog is now a simple, fun, transparent, and Farcaster/Coinbase Wallet - integrated game — bringing the same immediacy and addictive gameplay of Flappy Bird into the Web3 world.

Smart Contract Address(es)

TestNet (Base Sepolia)
0xD155286756CbBABFa229563D09533EBB3E5BfdcF

TestNet Update (Base Sepolia)
[0x22548d20bA326cDC9858D4c46DB8d3b4FB52ba13]
https://sepolia.basescan.org/address/0x22548d20bA326cDC9858D4c46DB8d3b4FB52ba13#code

Other Onchain Proof

TestNet (Base-Sepolia)
0xeaf0d29452effdf274a1f606567611132ca86d09937a91ffdd26437b0c271ff2

TestNet (Base Sepolia)
0x22548d20bA326cDC9858D4c46DB8d3b4FB52ba13