A browser Path of Exile clone built with Claude Code reaches a playable prototype in 3 days
IT-BAER · reddit · 2026-07-24
A browser Path of Exile clone built with Claude Code reaches a playable prototype in 3 days
The author is building a fan project called Pact of Ruin entirely with Claude Code as a challenge before the next PoE league starts. After three days, the project already has:
- deterministic ECS simulation at 30 Hz with fixed-point integer math so replays checksum identically
- procedural map generation with open fields and boundary walls
- a PoE-style item system with rarity tiers and affixes
- a React + Babylon.js + TypeScript client
The most useful part is the workflow: the repo includes real PoE2 screenshots, and a CLAUDE.md rule tells Claude to check them before doing UI or rendering work. That kept tooltips, rarity colors, and stat formatting much closer to the real game. Another rule points Claude to poe2db so it doesn’t invent affixes.
The author also notes a bug where map walls rendered as near-black patches because the client and simulation used different seeds. The project still lacks a skill tree, persistence is only half done, and balance is nonexistent — but it is now a playable, free fan version focused on short map runs.
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