Dev ships netplay in unplanned game after 3-4 days of grilling frontier models on the spec

banteg · x · 2026-10-19

banteg endorses xlr8harder's workflow: spend most of your time specifying the problem domain, constraints and invariants — agent implementation then becomes straightforward, while unplanned projects fail as agents make bad independent decisions.

As proof, he shipped netplay in a game never architected for it: 3-4 days interrogating frontier models and drafting a bespoke spec turned skepticism ("syncing 500 active entities is impossible") into confidence ("feasible, cheap, plays well across continents"), followed by just one day of Opus coding. Lesson: nail the design with the model first, then let agents implement.

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