Apple previously blocked all emulators on the grounds that they can play many games, and every ... PS2 emulator on iOS, Play! supports a range of file formats, such as CHD, CUE, ELF, MDS, ISO, ...

However, these may break things, and there are several Dev releases every day. Pro tip: Since it is a portable app, you can move the folder wherever you want for easier access. I usually stash it ...