The app is an emulator mind of thing for the psp version of sony PlayStation it can run allmost all the psp titles including my favourite game god of war, it has two series of the game in this version the chains of Olympus part and the ghost of Sparta part it was the only reason to download the app other than that the app is a little irritating as the buttons are all shown on the same screen and whenever it asks you to use 3 or 4 buttons together it just becomes impossible if you have a low specification phone so I would suggest you to buy a new phone and run the new ps2 emulator ( you can get the links from androking and my PlayStation these are youtube channels showing you right path to download various games and app that are paid for free such as the gold version of the ppsspp)