GemStone IV is a multiplayer text-based online
role-playing video game (often known as a
MUD) produced by
Simutronics. Players control characters in a
High Fantasy game world named "Elanthia". The first playable version of the game was known as
GemStone ][ and was launched in April 1988 on
GEnie. It was one of the first
MMORPGs and is one of the longest running
online games still active. Access to the game is subscription-based (monthly fee) through its website, with three additional subscriptions levels available, "Premium," "Platinum," and "Shattered", in addition to a free-to-play model introduced in early March, 2015.