Overview
Glitch was a browser-based massively multiplayer online game created by Tiny Speck (which would later publish Slack and be renamed Slack Technologies). The game was developed under the leadership of Stewart Butterfield. Glitch was officially launched on September 27, 2011, but reverted to beta status on November 30, 2011, citing accessibility and depth issues. Glitch was officially shut down on December 9, 2012.
Gameplay
Glitch was a casual, 2D browser-based game featuring a strong multiplayer component. It deliberately steered away from combat mechanics, instead focusing on collaborative crafting and gathering activities. Players were prompted to complete quests and perform various activities that would change the persistent world. Players were invited to expand upon the world, shaping its growth through various activities such as growing plants and trees and cooking food items. The game was free to play, but players could spend money to acquire a number of things such as customization options for their avatar.
Upon logging in for the first time, a user was brought to a one-time street (area), in which a staff member, or specially appointed user (called a "greeter"), would briefly explain the game and show them some features. Once left, the greeting street could never be re-entered. After the "unlaunch" they had a new, more complex and full introduction, in which it was done by NPCs.
From Wikipedia (CC BY-SA 4.0).