On the Random One Blockmap, you will have a difficult survival. The catch is that not only will you have difficulties with resources, but by destroying the block you can get anything, from a useful block to some kind of aggressive mob. There is no logic or strategy here, only luck.
You need to create your base and live at least for a while.
Description
You will find yourself on one block, surrounded by emptiness. If you mine this block, then you can get random other blocks, resources, mobs, and anything. In this way, you will gradually build a certain area of blocks around you and develop stronger and stronger, or, as you're lucky.