There are 8 in the OP. The ONLY client that should work without alteration is the server it's self.
READ what I have written.
To use any other client, you must modify either the client, or the server.
But the server is a client and always has been.
--- EDIT ---
Because I know there are a lot of people who are not the fastest, or bravest Olly'ers out there. I'm going to post some patches to make the server work as a regular client more easily. (This trick is used by many Hackers to infiltrate your servers! Use it to protect your self, and for Gods sake think about how they may do that! I cannot and will not document it here!)
There are 3 server executables in Operz release. 4096.exe is a partial translation, and has the GFantisy LordPE rubbish in it the same as everything else. Ignore it! server4096b.exe is another LordPE attempt that seems to have been stillborn. Delete it!
When I talk about the 4096.exe I mean the file "server4096.exe" in this release. (or other similar releases, where it is often simply named "4096.exe" but not the same as the file of that name in this release.)
Patch it to work as a client without needing PristonSQLdll.dll or getting upset about security contact from HanGame, using one of these files and methods.For complete idiots, (no offence) use
this executable patch. Just drop "
server4096.exe" on it, a "DOS" (correctly NT console) window will flash up for a moment and the patch will be done. (it may flag on AV software) Packed in a RAR file because it's silly big for such a small patch.
(23,818 bytes packed.
SHA-1 =
AE5E35604D3C4F2630B76085F0D05BB2E7D1BA5A)
For intermediates (especially if you love playing Playstation games and other console ROMs on your PC via emulators) use
this PPF file with
PPF-O-Matic or similar. Packed, again, in a RAR file because it's still silly big.
(30,927 bytes packed.
SHA-1 =
3184DE40FFEF556C4612DDA097C91C3EA7A07373)
For the complete Geek, you only need
this tiny bsp file which you can use with
BSPatch.exe from the command line.

Not packed, because it's smaller than the header of a RAR file.
(563 bytes
Not Packed!
SHA-1 =
F1174FC1AD401EF469C8DEF01562CE134FFC872A)
Oh... and FYI it becomes jPT 4008, or Version 4.0.8 Japanese Priston Tale client. ^_^
I considered cleaning up Operz release before re-releasing it... but since it is well documented in the form it was in, I decided not to change anything about it. Note even the things I know are pants.
Despite those things, it is still in a cleaner state than any later release I have seen. In some (maybe many) ways, even cleaner than my PPT. (which also has issues of it's own)
P.S. Thanks to MyDataNest for free and very easy file hosting. (Let me know if anybody has trouble with this host, I can find more, but I have found few so simple.