Minecraft is a sandbox construction game created by Markus Persson and is currently in pre release alpha. Minecraft development started around the 10th of May 2009, pre-orders for the full game started being accepted on the 13th of June.

The game involves players creating and destroying various types of blocks in a three dimensional environment. The player takes an avatar that can destroy or create blocks, forming fantastic structures, creations and artwork across the various multiplayer servers in multiple game modes.
The game is focused on creativity and building, allowing players to build constructions out of textured cubes in a 3D world. The game has two variants free Classic and paid Beta where Classic is focused entirely on construction with unlimited material supply, while Beta requires players to acquire resources themselves, and contains mobs, player health, and additional features and items.
About the Game :
Minecraft 1.7.4 :
Official Minecraft client :