Unlike emulation, which mimics hardware, a source port involves rewriting the game's engine to run directly on the host hardware.

The second method involves the "PS2 Classics" wrapper, a VPK that utilizes the official PS2 emulator built into the Vita’s PSP emulator (Adrenaline) or native PS2 hardware emulation layers present on certain test kits, though primarily delivered via the Adrenaline environment on modified units.

For years, Sony’s PlayStation Vita was the home of "almost." It almost had the support of triple-A developers. It almost outsold the 3DS. But for fans of survival horror, there was one glaring omission that hurt more than the rest: the lack of a native Resident Evil 4 port.

That is, until the homebrew community stepped in. Today, we look at the phenomenon of the RE4 PS Vita VPK—a technical marvel that proves where there’s a will (and a MIPS processor), there’s a way.

We must address the gray area of the "VPK" search.