Minecraft is a sandbox building indie video game written in Java originally by creator Markus "Notch" Persson and now by his company formed from the proceeds of the game, Mojang. The game is focused on creativity and building, allowing players to build constructions out of textured cubes in a 3D world. The game is divided into two main modes – free Classic and paid Beta – where Classic is focused entirely on construction with unlimited material supply, while Beta requires players to acquire resources themselves, contains mobs, player health, and additional features and items. The gameplay is inspired by Dwarf Fortress, Dungeon Keeper, and Infiniminer.
The game is currently in development and Beta is the only continuously updated version of the game. Minecraft was developed for about a week before its public release on May 17, 2009 on the TIGSource forums, where it gained a considerable level of popularity. It has been continually updated and patched since then, and while it was still in alpha release, it garnered several hundred thousand sales and received critical notice and acclaim from many reviewers. It passed a million units sold on January 12, 2011, less than a month after reaching Beta.