Game development is often a completely different set of skills and maintenance profile compared to enterprise SaaS development. Many single-player games especially indie ones don’t need to worry about multi-year contracts or having to work through many cycles of different developers coming in and out of a project. Having a 1000+ line switch statement seems totally reasonable on a project with a handful of developers that will continue to work on the project.

My understanding is that the switch statement was for npc character conversation text. That seems pretty reasonable, even in enterprise SaaS for something like translations. It might not be as easy to maintain in other circumstances.