CastleMiner is a creative building game for the Xbox 360.
Currently CastleMiner is only on the Xbox 360.
You can get CastleMiner on the "Indie" section of the Xbox Live Dashboard, or by following this LINK.
CastleMiner is currently on sale for 80msp (or $1)
In CastleMiner you can build and modify a block based environment, with up to 15 of your freinds and over 200 block types to choose from.
No, CastleMiner Z is a separate product. CastleMiner Z is a zombie horror survival game where you can craft weapons and tools. You can GET IT HERE.
No, they are two separate products.
Yes, CastleMiner features 16 player multiplayer.