The reason why the mobile version of Minecraft had boundaries was because the world of the game was made up of blocks. These blocks could form various terrains and buildings, so there needed to be boundaries to distinguish different areas in the game. In addition, different cube types and attributes in the game were also different. Their distribution at the border was also different. For example, stone walls and glass could form a clear boundary on the ground, while tree trunks and grass might be difficult to distinguish. Therefore, the existence of boundaries in the game helped players better explore the game world and also helped developers better design the game content and gameplay.