GG

GG may refer to:

In slang:

In science and computing:

Gg: Gigagram, grams

In music:

In politics and law:

Organizations:

Groove Coaster

Groove Coaster is a iOS rhythm game developed by Matrix Software and released by Taito Corporation on July 28, 2011.Groove Coaster Zero is a free-to-play updated version of the game.

An arcade version of Groove Coaster (known as Rhythmvaders in some areas outside Japan) is released in 2013, with the touchscreen replaced by two giant controllers called "BOOSTER" with a white button on each. Groove Coaster EX (known as Rhythmvaders EX in some areas outside Japan) is an updated version of the arcade version of Groove Coaster.

Groove Coaster 2: Heavenly Festival (known as Rhythmvaders 2 in some areas outside Japan) was released on January 22, 2015, in which LEVEL system was removed and was replaced by a new system call GROOVE COIN system, in which player can get GROOVE COINs according to their performance.

On July 1, 2015, Groove Coaster 2: Original Style was released on iOS and Android platform. In this version, stage maps from arcade version are added for some tracks, which makes two-finger play available. A new input mode is introduced, in which player plays the stages by making sound instead of touching the screen.