LennyFighter: A multiplayer fighting game on Cloudflare Durable Objects

Name: LennyFighter: A multiplayer fighting game on Cloudflare Durable Objects
Availability: InStock
Author: iglesiasbrandon

by iglesiasbrandon·Apr 21, 2026·2 points·1 comment

Visit Project View on HN

AI Analysis

●●●BangerWizardryBold Bet

Zero-origin multiplayer fighting game running entirely on Cloudflare Durable Objects.

Strengths

•Hibernatable WebSockets handle reconnection without dedicated game servers.
•Durable Objects manage match state at the edge.

Weaknesses

•Trivia mechanic limits gameplay depth compared to action fighters.
•Vendor lock-in to Cloudflare's specific edge architecture.

Post Description

I built LennyFighter to explore how far Cloudflare's developer platform can go for real-time multiplayer. Everything runs at the edge with zero origin servers: Vinext (React SSR) + Workers + Durable Objects for match state + D1 for stats + KV for session tokens + WebSockets for real-time play.

It's a 1v1 trivia fighting game where you pick a tech industry leader as your fighter (Brian Chesky, Marty Cagan, Elena Verna, etc.) and answer trivia from their real Lenny's Podcast interviews. Correct answers deal damage scaled by type effectiveness; wrong answers cost you recoil HP.

Each match is a MatchmakingQueue DO → MatchRoom DO (one per match) with hibernatable WebSockets, 20s reconnection grace period, and an optional pre-match wager/item selection phase. Source: https://github.com/iglesiasbrandon/lennyfighter

Inspired by PokeLenny. Would love feedback on the architecture or the game or new features to add!