Ragnarok Odyssey Ace has a number of collaborations

Ragnarok Odyssey Ace will have several collaborations with a number of games, published by both GungHo Online Entertainment and by other companies. 

You’ll see collaborations with Tales of Symphonia Chronicles, Grandia, Gravity Rush, Soul Sacrifice, Dead or Alive 5 Ultimate, Emil Chronicle, Picotto Knight, Ragnarok Online, Ragnarok Tactics, Kerihime Sweets, Puzzle & Dragons, Crazy Tower, Dokuro, Sengoku Tenka Trigger, and a secret title, too.

Ragnarok Odyssey Ace is coming to PS Vita in Japan on August 29, and to both PS Vita and PlayStation 3 in North America and Europe this winter.

Thanks, Re: Gigen.