Like the other games, Moero Crystal places emphasis on ecchi and fanservice content, and follows protagonist and "lucky lecher" Zenox as he searches for monster girl bras in order to "save the world".

[8] Upon meeting certain prerequisites, it is possible to go inside the heart of a specific monster girl in a dungeon called the "Depths Domain"; clearing it unlocks a variety of different things for the said character.

[9] The game's story begins when the "Bra of Everlasting Darkness" and "Panties of Hope" are stolen, and a "Dimensional Chasm" appears in the skies.

[5] It is produced by Norihisa Kochiwa, directed by Makoto Kitano, and features character design by Katsuyuki Hirano.

[4] A debut full-length trailer of Moero Chronicle highlighting the game's new features was released in July.

[12] Pre-orders of Moero Crystal include a special product code to download "Nude Flash" underwear of eight of the game's girl characters.