Their last major project was nothing short of surreal: building a working version of Minecraft inside Minecraft. After a three-year break, Sammyuri has returned with something even more ambitious — a 5-million parameter chatbot constructed from 439 million blocks. Inside CraftGPTCraftGPT is a small language model built fully inside Minecraft using pure Redstone, with no command blocks or data packs. CraftGPT uses over 430 million blocks, with the structure itself measuring 1,020 by 260 by 1,656 blocks. From building Minecraft inside Minecraft to creating a 1Hz CPU called CHUNGUS 2, their projects always push the game’s limits in ways that feel almost impossible.