I'm creating this thread to avoid the 3DS thread being contaminated with talk about the Vita build! I've been messing around with Rejuvenate for Unity today and it's rather good! So lets talk about the Retroarch cores for Vita. The latest nightly builds can be downloaded here. There's also a completely separate, unrelated Vita port of CATSFC here. I've tested the latter CATSFC release and it runs full speed on my Vita even in 333MHz mode. Disabling Vsync gives 145fps in Mario World. Crazy!