I tried the "new" version of Minecraft just last night, and I wasn't really impressed. I couldn't figure out how to get a mine cart or even build land. The old version let me build as much as I want, which was boring in its own way, but the new version doesn't seem to let you build at all. Sure, you can move objects, but you can't add objects or change their color or anything like that.
I miss playing Sauerbraten (Cube2) and building really awesome levels. Later, we'd play those levels in deathmatch mode. I miss sliding down portal-filled race courses and avoiding lava pits. I miss making giant game consoles in the sky and having them spark and smoke in various spots. I miss playing Sauerbraten.
Minecraft had its nice points, though. I don't know exactly what all of them were, but I did like some of the stuff I saw in videos. The mine cart was what I wanted to try, after all. I wish the game gave more direction and explained what you're supposed to do.