SnowPME is a emulator for PlayStation Mobile.
well actually, 'emulator' is maybe not the right term, PSM software is built targeting the Common Intermediate Language; and the are very much designed to work on multiple devices, it's built upon the .NET CLR and even offically uses a fork of Mono
PlayStation Mobile games were originally distributed on both the PS Vita, and some android phones such as the Xperia Play a windows version of it also exists though explicitly for developers, included in the SDK;
however, PSM also has quite alot of custom functionality built in as well, for graphics, music, leaderboards, controllers, etc
which is why you can't just run app.exe and have it work; the custom functionality is mostly what SnowPME tries to replicate;
however, unlike Mono/.NET PSM makes some effort to isolate itself from the rest of your OS, (io sandbox, no p/invoke, managed code only) and the CLR is still a CPU architecture, just not one anyone ever made with electronics; and an emulator is generlaly understood to run something made for one thing, on a different thing; and don't even get me started on 'server emulators'... so- you could argue either way; its just silly semantics anyway;
but- i already chose the name SnowPME and "PME" was meant to mean "Playstation Mobile Emulator" so thats what we're going with;
Please note; this is in active development; most graphics related functionality is not done yet; so not much will run under this as of yet, mostly every retail game will just crash very early on;
alot more also needs to still be done; currently only a couple basic tests run currently;
if you just want to running psm software on your PC,
the best way at the moment is manually decrypting all the files;
then running app.exe under the "PSM Simulator" from the PSM SDK.
Before you can do anything; you need to extract the .NET Runtime Libraries System.dll mscorlib.dll and Sce.PlayStation.Core.dll
from the "PSM Runtime Package" (PCSI10011), or "PSM Developer Assistant" (PCSI10007), on PS VITA, or from the "PlayStation Mobile SDK";
if your extracting files from a PS Vita, they do have to be PFS decrypted; but do not have to be PSSE decrypted;
please note that software made for PlayStation Mobile for Unity (PCSI10009, & PCSI10010) runtimes; are not yet supported at all; and are not planned at this time;