It looks like if you've got your hands on a PlayStation Vita you won't be stuck with that selection of launch titles for long. A developer has shown off a Sega Genesis emulator running on the high-powered portable in a YouTube video — the first such demonstration we've seen on the Vita. Information on how the feat was accomplished is under wraps for now, though we do know it's running the old picodrive Genesis emulator within the Vita's built-in PSP emulator. That's right, it's an emulator-within-an-emulator, and — as you can see below — Sonic & Knuckles seems to be running well on it. User frwololo, who uploaded the video, says that it's a followup to the "hello world" Vita hack we saw just the other day.