|Developer(s)||Neowiz Games, EA DICE|
|Engine||Modified Refractor 2 Engine|
Battlefield Online (Korean: 배틀필드 온라인) was a free online first person shooter developed by Neowiz Games, Electronic Arts and EA DICE, and distributed by Neowiz Games. It was a remake of Battlefield 2. However, its game engine was Battlefield 2142's modified Refractor Engine 2, with graphic-improvements over Battlefield 2. It was developed by Neowiz Games of South Korea with oversight from license-holder Electronic Arts. Having started its second beta test, Battlefield Online unlike Battlefield 2 had shown support for 100-maximal-player battles. The open beta testing of the game was started on March 30, 2010. The game servers were shut down on May 21 2013.
- "Battlefield Online On Neowiz's Pmang Portal (Korean)". Archived from the original on August 22, 2009. Retrieved August 13, 2009.
- "Battlefield online, 120% of the original Power-Up (translated)". This Is Game (Korean). Retrieved March 31, 2009.
- "Battlefield Online, describing a fierce battle (translated)". Retrieved July 31, 2009.
- "피망 - 배틀필드 온라인 BATTLEFIELD ONLINE" (in Korean). Neowiz Games. Archived from the original on May 30, 2013. Retrieved October 22, 2016.