Straight Line Survival is a new map on which you're allowed to move only along the narrow line. You will bump into different challenges, mob spawners, resource shortages, but you need to move forward and survive. Forget about everything you see outside the line - you can't interact with it. The final destination on your journey will be a fight with Ender Dragon.
Credits: Laxya singh
How to install maps:
Download the .mcworld file below
Open file using any file manager to import it into Minecraft PE
Open Minecraft Pocket Edition and look for the map among your worlds