Actually, that's all you can do at the moment. "Alpha 0.1" has 36 different block types with which you can build, alone or with another local wireless player. Other features will be built into the game later, as with the main game. Also coming later is a wider Android release.
While you think about whether to try this out, here's a miniature tragedy: That Minecraft-themed Xperia Play phone auction hasn't ended yet, so its new owner definitely doesn't have it in time for Minecraft's release.
Today we are releasing the first version of Minecraft – Pocket Edition. The game will be exclusive to Xperia Play for a limited time and released to other Android devices in the near future.
The first version (Alpha 0.1) will focus on the creative aspects of Minecraft. We have tried to put in the features that make sense for playing on a mobile device while still keeping the core of the Minecraft experience. You will be able to select blocks on the touchscreen or just scroll through them with the circle and square buttons on the Xperia Play device. The first version also supports multi-player on a local wireless network allowing you to create a world and invite friends to build together. Some of the features in this release include:
• Randomized worlds
• Build anything you can imagine
• Build with 36 different kinds of blocks
• Invite and play with friends to your world (local wireless network)
• Save multi-player worlds on your own phone
Just like the PC/Mac/Linux version of Minecraft we're planning to continue developing the Pocket Edition for a long time with frequent updates. We are eager to hear what the Minecraft community thinks about our new game and what you all want to see in future updates.
Minecraft – Pocket Edition is now available in Android Market (only visible to Xperia Play devices) for $6.99