That Time I Got Reincarnated as a Slime Season 3 Episode 23: The Labyrinth Is Opened

This episode is practically the culmination of all the planning work Rimuru and his allies have done throughout much of the season. Instead of focusing on spectacular battles, it shows how Tempest transforms the labyrinth into a tourist attraction, a source of income, and a strategic tool all at once.

The best: The labyrinth's opening is a success. We finally see the result of months of preparation and how adventurers from different regions react to this new attraction.

Rimuru's economic genius. Once again, he demonstrates that his greatest weapon isn't brute force, but his ability to create systems that benefit Tempest.

Masayuki provides some funny moments. His disproportionate fame continues to generate entertaining situations and some light comedy.

Great world-building. The episode shows how Tempest is transforming into the economic and cultural center of the region.

The worst: Very little action. Those expecting a big fight or a major conflict may feel the episode moves slowly.

Slow pacing. It's more focused on showing results and reactions than on developing dramatic tension.

It feels like setup. While entertaining, it functions more as a prelude to the season finale than as a memorable standalone episode.

My opinion:

This episode perfectly encapsulates much of what the third season has been about: politics, economics, administration, and world-building. The labyrinth is a very creative idea because it combines entertainment, adventurer training, and resource generation for Tempest.

It's not an action-packed episode, but it does showcase how much Rimuru's nation has grown from its humble beginnings. For fans who enjoy watching Tempest evolve as a country, it's one of the most satisfying episodes of the festival arc.

Final verdict: An entertaining and well-executed episode that rewards all the build-up. It doesn't have any major battles, but it shows Tempest functioning exactly as Rimuru always envisioned. 8.5/10.