There are useful touches, like an auto-jump that allows you to climb easily, making traveling much easier, and the controls less awkward! The controls are surprisingly good - the transition from Mouse/Keyboard is never easy, but Minecraft - Pocket Edition Demo has clearly had lots of thought put into it. There's also a Survival mode in Minecraft - Pocket Edition Demo, where you have to collect resources, build structures and fight off monsters in order to keep going. There is no save game, so your creations in Minecraft - Pocket Edition Demo won't last. Minecraft - Pocket Edition Demo like the original Minecraft Classic, has a Creative mode, where you have infinite blocks available to you so you can build whatever you like.
On an Xperia Play, Minecraft Pocket Edition Demo runs smoothly, and looks just like it's desktop big brother.