Minecraft Alpha 12601 Exclusive [2021] -

Real version 1.2.6 was the final "Alpha" before Minecraft transitioned into its Beta phase .

While this version is famous for being a "lost" version of Minecraft discovered in 2022, the specific "solid" attribute refers to the following mechanics: Key "Solid" Changes in v1.2.6-01 Collision Box minecraft alpha 12601 exclusive