The possibilities on offer in this paperback version, are currently somewhat smaller than those in its desktop brother. In this demo version of the game, instead of the 36 types of blocks normally available, you only get 18. Nevertheless, you can still freely create thousands of different structures.
The major drawback of this demo version of Minecraft Pocket Edition is that the games will not save between sessions. This means that everything you do in a world will have disappeared the next time you start playing.
Minecraft Pocket Edition (demo) is, for the moment (it will be updated from time to time) a version with fewer features than the Minecraft we all know and love. Gradually though, this version will become more and more complete.