How to Find the New Cave Biomes and Prepare for Exploration

Digging Below Vanilla Depth

Infinity Cave expands the world's bottom limit from Y -64 down to Y -128. To reach the interconnected cave system, dig past the normal deepslate floor below Y -64. Down here, you will find 5 custom cave biomes as well as an expanded Deep Dark biome, giving you 6 distinct underground regions to explore. Every biome contains at least one custom structure.

Preparing for the Difficulty Spike

Regular vanilla mobs do not spawn in these lower caves. Instead, the data pack uses a custom roguelike spawning system designed for late-game characters. Before heading below Y -64, make sure you have strong vanilla gear, plenty of food, and mobility items.

Because the custom mobs have randomized stats and offhand items that alter their behavior, the caves are much deadlier than standard survival underground areas. For your first run, keep the data pack's difficulty on its default Easy mode (and consider setting your vanilla world difficulty to Easy as well) until you learn how the new mob mechanics work and collect better gear inside the caves.