Download DataDownload Data Here
When you have bought the game, you can download the stand-alone launcher for Minecraft here. It will automatically update the game files with the latest version. You'll be able to play the game without an Internet connection if you've been online at least once.
Minecraft for Windows
Download Minecraft.exe (270 KB) . Place it anywhere you want, then run it.
Minecraft for Mac OS X
Download Minecraft.zip (270 KB) . Unpack and place Minecraft in your /Applications folder.
Minecraft for Linux / Other
Download minecraft.jar (89 KB) . The jar is executable and might work as-is. If you run into memory issues, try launching it with java -Xmx1024M -Xms512M -cp minecraft.jar net.minecraft.LauncherFrame , also please use Sun's JVM.
If you're running on Windows and just want to set up a server easily, download Minecraft_Server.exe (802 KB) and run it.