Technically, it IS endless, yes, but only because without cheats, it would be almost impossible to get to the edge of the world. See, there is always a 0, 0 mark, where you're at zero x-axis, zero z-axis (y-axis is for height). Once you get to x=12,550,820 or -12,550,820 or the same for the z-axis, the game pretty much breaks down. The physics fails at that point. But, basically, it means that your world can be approximately 25m x 25m squares. Pretty damn big. hehe The Earth has a surface area of about 510 million square kilometers, the game (if counting a square as a meter) is around 630 trillion square kilometers.

As for the height, aye, I imagine that could be a little annoying. With the PC version, they updated to the Anvil file format. So instead of only 128 blocks, you get 256. The bedrock is still at the same place, but the build limit became three times higher than before. Hopefully they let you guys have something similar.

Wow that is an insanly large map! I can't even begin to imagine the amount of time it would take to get from one side to another.

256 block build limit is definitely nice. I think we're still at 64 or 128 (probably 128 even though it doesn't seem to go that high). We actually have an update coming soon that adds a few things like spawn eggs and The End. There's also talks about a texture update in the future. I'm hoping the next update after the announced one adds all of the current PC items, increased textures, and doubled build limit and map size.

Hey what is the most impressive thing you've built? 

I wouldn't hold my breath for all of the PC additions so quickly. It took an awful long time for the PC version to get where it is now and I imagine they need to adjust things for the 360 version (especially balance), but eventually you guys should be able to get most, if not all, of the PC things to craft and use. As with all things gaming, patience is probably your best friend. *chuckles*

Hm. Well, I guess it depends on the definition of impressive. heh The World Tree is definitely the build that took me the longest and I feel pretty happy with that one, as well as my massive tower, but honestly? I think the thing I'm proudest of is the Nether Rail network. I've had to bridge five seperate lava lakes, using that 'creep to the edge and place your block method', for probably a hundred and fifty squares on one of them. It was huge. Cutting through mountains, trying to figure out the best way to get the level variations to work, having one of my launcher types stop working because of an update and having to place over a thousand squares of rail...that would probably be my most detailed build because you can't just wing it. You have to plan it really carefully or you waste rail and resources. Worst case, you'll cut through a block that sends you falling fifty squares onto a hard surface (lesser evil) or into lava (very agitating greater evil). That really took some doing to get right.

don't throw away the computer!!!!!!!!!!!!!!!!!!!!!!!

Take out the hard drive and put it into a hard drive cabinet. That way you can use it as a portable hard drive.

You can find your minecraft world in  Users/username/appdata/roaming/Minecraft

Heh, yeah I'm sure those updates are still quite a long ways away. 

When the game updates does the world you are currently on update too or do you have to start a new world?

I do not Know of this block limit. At least in a casual, peaceful world I hav e a lot more blocks in many structures. Are you talking about the number of blocks you can hold at one time in survival mode.?@yojohn or chaos?

The Block Limit is how high you can go into the sky before you hit the invisible ceiling.

Hmmm.... I see what they mean as the limit ends at the clouds. Though you can fly well above that. So far I do not feel limited b y the world size. It would probably take months of playing to expand outside of the area limit. *shrugs*

The build height limit wouldn't normall be a problem for me but I'm building a castle on top of a mountain so I only have 14 blocks of height before I reach that limit. 

Hm, depends. On a 360 world that's only 1000 blocks end to end, you might need to. When a chunk forms (usually 16 x 16), that's that, it's created. If you form all of the chunks in the world, there's nothing that can be new upon updating. So then you'd have to make a new world. But if you haven't formed all of the chunks, then no. This, of course, is only for new, naturally occuring blocks. For actual craftable items? Nope, you can use your old world.

Also, looking forward to seeing your castle!

Now that I've finished this dungeon I've been spelunking (four friggin' days to do it), I'm going to start looking for the site of my new build.