Minecraft Java 1.21 Mods

Browse 5 free mods for Minecraft Java 1.21 — popular picks include Create: Stranded at Sea, Seaopolis Submerged 2, OceanBlock - Skyblock Reinvented.

Updated daily

FiltersAdventure×Ocean×Survival×Clear all

Sort

PopularNewestA–Z

5 mods

1.21.1neoforge

Create: Stranded at Sea

An ocean survival, centered around create automation, adventure, and a fully integrated economy system.

295kdownloads

1.21.1neoforge

Seaopolis Submerged 2

An ocean based survival questing modpack. Back for 1.21.1

174kdownloads

1.21.1neoforge

OceanBlock - Skyblock Reinvented

Skyblock, but in the ocean

4.0kdownloads

1.21.1

Seaopolis Submerged 2 Modpack (1.21.1) – A New Generation of Underwater Skyblock

Seaopolis Submerged 2 Modpack is an ocean-based survival and questing modpack for Minecraft. Players are plunged into a fully custom underwater world called Seaopolis, filled with unique terrain, challenges, and surprises. Your journey begins inside a sealed glass sphere deep beneath the waves, where you must fight, build, and innovate to survive in a world […]

1.21.1

Subnautica After Zero Mod (26.1.2, 1.21.1) – Survive the Deep Sea and Uncover

Subnautica After Zero Mod brings the famous underwater survival game into your Minecraft world. It continues the story a few years after the events of Subnautica Below Zero. This mod adds familiar alien fish, special tools, and massive ocean biomes to explore. It is built specifically to work with a custom story map for the […]