What Is the Sizechange Datapack?
Minecraft has always been about bending the rules of reality, but the Sizechange datapack takes that to a whole new level. This clever creation lets you shrink down to a tiny miner or tower over the landscape as a colossal giant, all by holding a simple custom item. Designed for version 1.21.11, it introduces a fresh layer of strategy and chaos to your worlds. Whether you want to speed through deepslate or just feel enormous, this datapack delivers a unique twist on vanilla mechanics.
How the Size-Altering Mechanic Works
The core idea is brilliantly straightforward. Whenever you hold one of the special items provided by the datapack—either in your main hand or offhand—your character’s size changes instantly. Stash the item away in your inventory, and you snap back to normal proportions. There is no need to fiddle with commands or complex settings; the transformation happens on the fly. This seamless switching makes it perfect for adventure maps, multiplayer pranks, or simply experimenting with a different perspective on your builds.
To get started, you can easily install this mod via the foxygame.net launcher — a convenient, flexible, and modern Minecraft launcher where you can download mods right from the menu. Once you have it set up, you will also need to grab the required texturepack from the official project page, otherwise the custom totems will appear as purple and black cubes. The pack ensures every visual element looks crisp and intended.
The Three Size Tiers
Sizechange offers three distinct scales, each with its own quirks and crafting recipes. The effects are not purely cosmetic; they dramatically alter your mining speed and overall gameplay feel.
Small
When you shrink to half your normal size, the world feels vast and every block looms overhead. The trade-off is that almost everything becomes worse—except your mining speed. In fact, you can tear through deepslate with an efficiency V diamond pickaxe without any beacon boosts, something normally impossible. The recipe for the small totem uses a totem of undying surrounded by emeralds, redstone, or lapis lazuli in a crafting grid. This flexibility means you can use whichever material you have in abundance.
Big
Doubling your size makes you an intimidating presence, but it comes at a steep price. Mining becomes painfully slow—almost impossible for any practical purpose. The big totem is crafted by surrounding a totem with emerald blocks, redstone blocks, or lapis blocks. It is a statement piece more than a tool, ideal for roleplay or showing off on a server.
Huge
Quadrupling your size turns you into a true titan. Breaking a single block feels like it takes a year, so do not expect to do any serious digging. The huge totem follows the same crafting pattern as the big variant but with even more expensive materials. It is the ultimate vanity item, perfect for towering over friends or creating memorable screenshots.
Crafting Your Size-Altering Items
All transformations rely on custom totems, but the datapack also introduces shield variants for those who prefer a different offhand option. The base recipes are simple:
- Small Totem: Totem of Undying + 8 emeralds (or redstone/lapis).
- Big Totem: Totem of Undying + 8 emerald blocks (or redstone blocks/lapis blocks).
- Huge Totem: Totem of Undying + 8 emerald blocks (or redstone blocks/lapis blocks), with a slightly different arrangement.
You can substitute the totem with a shield to create size-altering shields. However, the shield comes with a curse of vanishing, meaning it disappears on death. The upside is that the shield becomes unbreakable, giving you a permanent tool as long as you stay alive. If the curse is too risky, the Modrinth-exclusive breakable shield recipes let you craft a normal shield without the vanishing enchantment, though it will lose its unbreakable property. These recipes are a bit more involved but offer a safer alternative.
Shields: A Risky Alternative
Swapping the totem for a shield opens up new tactical possibilities. The cursed, unbreakable shield is a high-stakes choice—losing it on death adds tension to every encounter. Meanwhile, the breakable versions remove the curse entirely, making them a reliable everyday option. Just remember that any banner pattern on the shield will be wiped during crafting, so do not use your prized decorated shield unless you are prepared to lose the design.
Installation and Texturepack
To enjoy Sizechange without visual glitches, you must install the companion texturepack. Without it, all custom totems will show up as purple-and-black missing-texture cubes. You can download the pack from the Modrinth project page—just look for the texturepack file. Once both the datapack and texturepack are in place, load up a world and start experimenting. The datapack is lightweight and works smoothly on servers, though you should ensure all players have the texturepack for the best experience.
Conclusion
Sizechange is a delightfully quirky addition that reimagines how you interact with Minecraft’s world. The ability to toggle between tiny, normal, and gigantic forms with a simple item swap adds a layer of fun without overwhelming complexity. Whether you are mining deepslate at lightning speed as a miniature miner or stomping around as a huge, nearly immobile giant, the datapack sparks creativity. With flexible crafting recipes and optional shield mechanics, it caters to both cautious players and thrill-seekers. If you are looking for a fresh way to experience your favorite blocky universe, this datapack is well worth a try.