G-LOC: Air Battle is a 1990 combat flight simulator video game developed and published by Sega for arcades. It is a spin-off of the company's After Burner series. The title refers to "G-force induced Loss Of Consciousness". The game is known for its use of the R360 motion simulator arcade cabinet. The arcade game was a commercial and critical success upon release, and was followed by ports for Sega's Game Gear, Master System, and Mega Drive/Genesis consoles, as well as for various home computers.