Complete Heart announced that the cross over game they have been teasing is going to be a card game using various IP the studio has produced over the years.

The recently announced game features over 100 popular Compile Heart characters, as well as a new heroine and original story that throws together the characters of each world. 2D card battles are controlled by touching and dragging on the PS Vita touchscreen.
The main heroine is a girl named Yuriina, designed by Manamitsu, who in order to save the world of chaos from the threat of chaos energy, sets off on a journey in search of the gold fragments.

The cast will be composes of the following.
Fairy Fencer F

• Fang
• Eryn

Neptunia

• Neptune
• IF
• Compile

Trillion: God of Destruction

• Faust

Omega Quintet

• Momoka
• Kyouka

Source: Gematsu