In this world you spawn in an area that is only 256 by 256 blocks in size. Limited space, limited resources, and TNT spawning on every player every few minutes.
Yes, that's right. TNT will spawn on ever player every few minutes without warning. You need to keep your reflexes in check otherwise you may end up dead pretty quick!
The game is completely beatable, even with only a 256x256 space to work with; however, the question is: can you actually do it?
I guess we'll just have to find out, won't we ;)
Aside from the whole TNT thing and limited space, it's just normal survival. So gather resources, try not to die, oh and don't bother building anything, it'll likely just get blown up anyway.
Have fun, and good luck! :D