Francium
The Francium mod offers an extremely challenging gameplay experience that can cause real nightmares for unprepared players. The project is currently in beta testing, so the description is still brief, but we'll try to explain its features in as much detail as possible.
Important update: the mod now supports version 1.21.1! (but not versions 1.21.2-3)
Recommendation before installation: BETTER TO USE THE READY-MADE MODPACK, which will provide complete immersion in the gameplay. So what exactly is this gameplay?
The mod must be installed on both client and server.
Francium completely changes the familiar Minecraft mechanics, making obtaining basic items an incredibly difficult task. For example, crafting a workbench becomes a real puzzle.
IMPORTANT: JEI is required for the mod to work! Some recipes directly depend on this mod.
Most items turn into dust, and the player will face not only physical but also psychological challenges. Get down to deepslate as quickly as possible! You'll need tuff and tughhoar (dust).