Gakumini

Saltpeter is a new resource that appears in the Overworld and the Nether, and it is fairly abundant. It feeds into a Gunpowder recipe that combines charcoal, glowstone dust and saltpeter, so gunpowder no longer depends only on the vanilla route. Grass and tall grass give string when a player places them in a crafting slot, one and two pieces respectively.

Wither skeletons drop Witherbone, a new item crafted from bone, saltpeter, coal and charcoal. Witherbone is used to craft Wither Skeleton skulls with eight pieces around a golden apple, and it also serves as an ingredient for Blaze Rods. Shields get a short cooldown after taking a hit, and attacks that disable shields inflict a longer cooldown; the cooldown values can be changed through a game rule.

Gakumini runs on client and server, so the server and every player need it. Files exist for Fabric and Quilt, with the latest build, 1.2.1-1.20.4, targeting 1.20.4 and dated 2025-08-09. Game versions covered are 1.20.1 – 1.21.3, although files are published only for 1.20.1, 1.20.4 and 1.21.3. The mod is released under the Creative Commons Attribution Share Alike 4.0 license and is not open source; its source code, issue tracker and wiki are linked publicly.