I've recently been having a real blast playing the old JetFighter III Platinum Edition. FYI, the "Platinum Edition" is the same thing as the original JetFighter III with the "Enhanced Campaign CD" installed. I'm almost done playing ALL of the campaigns and missions in the game, but during my gameplay discovered a few bad bugs with some of the campaign missions.

Attached is a ZIP, I call it "JetFighter III Platinum Edition Unofficial Update #4" (as Mission Studios had released three official updates to the game back in the day), that fixes the problems with these missions. Readme included in the ZIP:

1JetFighter III Platinum Edition Unofficial Update #4
2----------------------------------------------------
3This unofficial update fixes problems with several of the campaign mission
4files where the next mission in the campaign would constantly loop back to the
5current mission, REGARDLESS if you win or lose the current mission.
6
7This unofficial update also fixes problems with several other campaign mission
8files where the next mission in the campaign would constantly loop back to the
9current mission, unless that you LOSE the current mission.
10
11These fixes now force the next mission in the campaigns to continue to the next
12mission, as they should.
13
14The included fixed campaign mission files are:
15
16MSN09038.DAT
17MSN12001.DAT
18MSN12002.DAT
19MSN12003.DAT
20MSN12004.DAT
21MSN12005.DAT
22MSN12006.DAT
23MSN12007.DAT
24MSN12008.DAT
25MSN12009.DAT
26MSN12010.DAT
27MSN12011.DAT
28MSN12012.DAT
29MSN12013.DAT
30MSN12014.DAT
31MSN12015.DAT
32
33To install, simply copy the included files to the "JF3\CAMPAIGN" directory on
34your hard drive, overwriting the existing files in that directory.

It's surprising that none of their beta testers (or customers) discovered these bugs back in the day, as they are definitely a showstopper... the affected mission files will NOT allow you to progress to the next campaign mission in the affected campaigns <DUH!>.

Anyhow, these hex-edited mission files fix those problems.

Also attached is a text file with some of the hex offsets for various values that I've discovered while playing the game for your "PILOT##.DAT" pilot data file, as well as the "MSN#####.DAT" campaign mission files. The hex editing investigation for the pilot data file came about because apparently the "JF3PILOT.EXE" Pilot Editing Utility that comes with the Platinum Edition / Enhanced Campaign CD is BROKEN and crashes back to DOS EVERY time (again, <DUH!>).

Anyways, is anyone still playing this old game? If so, you might find these files useful 😀