Dev builds cross-platform hero shooter in under a week using Claude and Codex agents in background
garrytan · x · 2026-10-19
Developer MathiasHeide (retweeted by YC's Garry Tan) shares a workflow of running Claude and Codex agents headless via the Summer MCP/Summer Engine in background chats, sending prompts during gaps while waiting on his main work agents instead of doomscrolling.
In under a week he built a magic hero shooter inspired by Marvel Rivals and League of Legends Arena, with full crossplay across Windows, Mac, iOS, and Android, servers in the US and EU (Asia coming), and hands-free publishing through the Summer MCP.
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