PS4 BD-J (PS4 Blu-ray Java) Homebrew answers, today I have a preview video of a PS3 Blu-ray Disc Java (BD-J) game port of Ukko's Journey I'm currently working on demonstrating Java homebrew on the PlayStation 3.
Ukko's Journey was originally a cellphone game developed by LuBlu Entertainment in 2008-2009. (See www.ukkosjourney.com).
In 2017 LuBlu Entertainment is porting the game to BD-J purely as a proof-of-concept project, demonstrating that homebrew for the PS3 + PS4 + Xbox One is possible with Java.
Once this project is complete, the game should run on all 3 consoles - from the same disc!
Here is a preview video showing the game running on a PS3.