Minecraft Java 1.21 Mods

Browse 3 free mods for Minecraft Java 1.21 — popular picks include Space Update, Stellar Depths, Mars Renaissance.

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3 mods

1.21.4fabric

Space Update

dannytaylor's April Fools' 2025 "Update"

453downloads

1.21.1neoforge

Stellar Depths

Drift through cosmic emptiness. A space exploration mod built around scale, silence, and the unknown.

400downloads

1.21.1neoforge

Mars Renaissance

The Mars Planet add to Minecraft!

75downloads