The only emulators i cant get working right now are the new mupen64 alpha, and the garage games emulators. But from what I'm seeing so far all the emulators that currently work with hyperspin have those arguments here in the forums or on that link you posted. So the only way iv'e figured out how to find the '.mainactivity' is to run a logcat on a rooted device. (May root my shield TV first - the 'feature' of not being able too write to the SD card is making this proccess of making minor changes quite a proccess) I'll give a few a try when I get a chance. I did come accross a page over at XDA that lists emulator arguements for XBMC which I think may be helpfull. I've been looking online but not finding anything simple enough for me to understand. BaseActivity/.MainActivity/.DraSticActivity ect? OK, so I still cannot figure out what how to get the exe= command line.