Blade Arts: Tasogare no Miyako R'lyeh (ブレイドアーツ 〜黄昏の都ルルイエ〜, literally "Blade Arts: Twilight City of R'lyeh") is a Japan-exclusive action-adventure game. It features characters designed by Nobuteru Yūki.
The gameplay of Blade Arts consists in exploring dungeons, solving puzzles and battling groups of enemies in sword fights. It features 3D graphics and is played from a third-person perspective. Different types of swords and spells can be equipped and used.