Daiya no Kuni no Alice ~Wonderful MIRROR World~ (ダイヤの国のアリス～Wonderful MIRROR World～), or Alice in the Country of Diamonds ~Wonderful MIRROR World~, is the sixth installment QuinRose's Alice Series. It is a parallel to Daiya no Kuni no Alice ~Wonderful Wonder World~ as well as to Joker no Kuni no Alice, the third installment, and it is set as if Alice was living at the Tower of Clover while living in the Country of Clover. As with Alice in the Country of Diamonds, the game begins with her discovering that she has been expelled from the Country of Clover, and that she is in fact the only person who was.
This game is based on the premise that Alice first stayed with Julius at the Clock Tower in the Country of Hearts and then with Nightmare at the Tower of Clover in the Country of Clover and never fell in love. The game starts with a ‘move’ sending Alice alone to the Country of Diamonds.
The Country of Diamonds is set in the past, and while Alice recognizes most of the role holders, no one remembers her. There is no Peter White to guide her, and the Country of Diamonds is a lot more dangerous than either the Country of Clover or the Country of Hearts.
Out of the four territories, Alice can only choose to stay in;
· The Castle of Diamonds (Ace’s Route)
· The Museum/Cemetery (Julius’s Route)
· The Station (Nightmare, Gray, and Boris’s Route)
The entertainment of the country is the Caucus games, held by Jericho Bermuda, the head of the Museum/Cemetery territory.
- It's shown for the first time that role holders can advance the time of others when Nightmare moves the time/clock of a "kitten" forward, only to reveal that the kitten is actually a lion cub.