OpenTelemetry for Balatro

A developer built an OpenTelemetry instrumentation layer for the game Balatro, letting the title emit logs, metrics and traces through the OpenTelemetry standard, and used an LLM to write the code because the outcome mattered more than authoring it personally. The project was described as a long-planned side project by an author who says they have spent hundreds of hours playing Balatro, which they call "the best 2 × 10 euros I've ever spent." The work illustrates applying observability tooling to software outside its usual server-side domain.

I should start this blog post with a witty joke, because that’s one of the key ingredients that make Balatro https://www.playbalatro.com/ such a beloved game. However, I can’t come up with one, so here’s a different intro: I am fascinated by the possibility that any software I use could, in theory, emit logs, metrics and traces through OpenTelemetry https://opentelemetry.io/ . And Balatro is software that I use a lot. I’ve spent hundreds of hours with it, the best 2 × 10 euros I’ve ever spent<sup 1 fn:1 </sup . So creating OpenTelemetry for Balatro was a side project I wanted to try out for a long time It turned out to be one of those projects where I cared more about the outcome than about writing the code myself, so it was a perfect candidate to ask an LLM to build for me