characters. The demon designs were handled by multiple designers, including Doi, Keita Amemiya, Yoshihiro Nishimura and Kyouma Aki; as Yamai liked Super Sentai and Kamen Rider, and aimed to have some demons matching Kaneko's designs and some inspired by the Ultraman series, several of the chosen demon designers were tokusatsu artists. The artists were sent materials so they would understand the mythological backgrounds of the demons, but were otherwise free in designing the demons according to their own interpretations. Music The music to Shin Megami Tensei IV was composed and arranged primarily by Ryota Kozuka, with additional compositions by Kenichi Tsuchiya and Toshiki Konishi. Their work began late in the development period and lasted roughly a year. They originally set a limit on the number of tracks at Yamai's request, but as the work progressed, the number of tracks ballooned. Motifs from earlier Shin Megami Tensei games were also incorporated to add an air of familiarity for fans of the series. A four-CD soundtrack was released in Japan in February 2014 by Mastard Records. It reached #64 in the Oricon charts and remained on the charts for two weeks. Reception In its first week of release in Japan, the game topped the weekly chart with sales of 188,562 copies, overtaking PlayStation 3 exclusive Kamen Rider: Battride War (2nd) and the PS3 port of Resident Evil: Revelations. In a later assessment, this was cited as Atlus' second best-selling title in recent history, just 4000 units behind the debut sales of Persona 4 in 2008. By the end of 2013, the game had sold 251,334 copies in Japan, and was the country's 30th best-selling video game of the year. By January 2014, the game had sold 90,000 copies in the United States since its release in July. By July 2015, over 600,000 copies had been sold worldwide. The title has received positive reviews in both Japan and internationally. Aggregate site Metacritic gave it a ranking of 83/100 based on 48 critic reviews. The battle system received universal praise: Famitsu, IGN, GameSpot, Eurogamer, Joystiq, Destructoid, and Game Informer all cited the battle system as highly enjoyable despite difficulty spikes and praised the game making allowances for newcomers. The negotiation and fusions systems were also praised, with several reviewers noting it as both entertaining and an improvement on previous versions. A gameplay aspect that received criticism was navigation via the overworld map, which was