Cave announced they were working on PlayStation Vita games at Tokyo Game Show last year. Both titles, a Sengoku themed social game called Shirotsuku and an unnamed shooter, have been canceled according to Famitsu.
"When we announced our PlayStation Vita games we mentioned one of them is a shooter. We’re just getting started on it so there isn’t much I can say about it at the moment," Makoto Asada, Game Development Manager at Cave, said in an interview with Siliconera. "Any platform we release a game on whether it be Xbox 360 or Vita we make our games specifically for that platform. The shooting game we make for Vita will be a title that matches the characteristics of that hardware." Asada said the shooter was an original game, not an arcade port.