Luan may refer to:
Red Earth, released in Japan as War-Zard (ウォーザード), is a fantasy-themed 2D competitive fighting game released by Capcom as a coin-operated video game in 1996. It was the first game for Capcom's CP System III hardware, the same hardware which Street Fighter III and its derivatives ran on. Red Earth is the only CPS III video game which has never been officially ported to home platforms, although its characters have appeared in later Capcom games.
Red Earth features two different game modes: a single-player Quest Mode and a two-player Versus Mode. In Quest Mode, the player chooses from one of the four main characters, and progresses through their character's storyline while fighting against a series of eight computer-controlled adversaries in one-on-one battles (like in the first Street Fighter, gaining experience points during each battle. In Versus Mode, two players fight against each other, each using any of the four main characters (including the same character as the other player). Red Earth uses a password feature that allows the player to play the game later on the same skill level their character reached when it ended the last time. The character is able to acquire new abilities depending on the skill level that has been reached.
Luan is the Mandarin pinyin and Wade–Giles romanization of the Chinese surname written 栾 in simplified Chinese and 欒 in traditional Chinese. Luan is listed 243rd in the Song dynasty classic text Hundred Family Surnames. As of 2008, it is the 226th most common surname in China, shared by 360,000 people.