Minecraft is a sandbox game created by Markus Persson, a.k.a "Notch". It is inspired by many games, especially Infiniminer. It has over 400,000 registered players.

There are 6 modes:
Creative: makes you build anything you want, single-player and multiplayer
Survival: a very basic version of Indev, where you have to defend yourself from monsters
Indev: a version which added a number of new features, including crafting and more monsters
Infdev: same thing as Indev except this version added an infinite playing surface

Multiplayer is a part of Creative mode, which allows you to build with other players in servers.
Unfortunately, there are "griefers" that destroy creations including yours.
A survival multiplayer was created in August 2010, which allows players to play Indev with other players.

A game your girlfriend doesn't want to know about.
She will leave you if you say:

A game where you can build anything with bricks
There are also different modes:
-Survival: A game where you have to dodge and kill numberious monsters
-Indev: Here you have to gain recrouces to build a fort, weapons and food (only avaialble if you buy the game)
-Free mode: build freely whatever you want with unlimited recources

You can also play online with it with user created servers
but in here you find tons of griefers if you dont protect your creations right

A game where the hackers quickscope the noobs from the other side of the map but the noobs need wood and shit whereas they have diamond AC130's and Bombing Runs.

The best game ever made. If that little fucker Jermeysays otherwise, fuck his mom.

A very Addicting game Made by Notch.

The first time you play it its fun. Next time you play it your addicted and cant get off.

A Java based game that just kick ass. People who play it just keep digging all the day in a marvelous world. This game is made for real gamers, since it requires the same graphic card than Modern Warfare 2, and even. Of course, when you face a so visually great game, you immediatly get addicted. Minecraft is genious!