Agent
Industry heavyweight Rockstar Games was partnering up with Sony in 2007 to develop the PlayStation 3 exclusive Agent, which was revealed to the public in late 2009. Two years later, however, that exclusivity was questioned. Early concept art for this stealth thriller seeped in occasionally, and to this day, Agent is said to be still in development.
Nobody seems able to shed some light on the game’s situation or what caused the constant stream of delays, which does worry those who are looking forward to this ambitious project. People now speculate Agent could become a PlayStation 4 exclusive following more or less the same route as The Last Guardian in that it requires the proper hardware to run optimally.
Sadly, speculation is all it will be for the foreseeable future until announcements are made and questions are answered.