Alliance of Valiant Arms (abbreviated as A.V.A, Korean: 아바, romanized: Aba, 简体中文：《战地之王》, 繁體中文：《戰地之王》) is a free-to-play online first-person shooter video game, developed by now-defunct Red Duck, Inc. using Unreal Engine 3. Since then, Neowiz has taken over the development and publishing of the game after aquiring its intellectual property. On June 15, 2011, A.V.A became available for download through Steam.