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Last update: 2020-10-12, added ARJAN cheat differences.
There have been at least 5 different fullgame releases of Jazz Jackrabbit. All releases have bugs and oddities in levels, none is perfect.
Summaries of the releases:
I (Simon N.) recommend the good 1.2 for casual play, and I recommend Jazz 1.0 for speedrunning episodes 1-6.
Jazz 1.3 got re-released by Good Old Games in November 2017. There is no clear way to fix the issues in GoG's 1.3 release, mainly the almost-impassable Orbitus 2. Ideas:
The following table shows all the version differences I know.
|Jazz Jackrabbit 1.0||Jazz 1.1||Jazz Jackrabbit, good 1.2||Jazz Jackrabbit, bad 1.2||Jazz Jackrabbit 1.3|
|Version printed by JAZZ.EXE before reaching main menu||none||none||1.2 -- the good and bad 1.2 have byte-for-byte identical .EXEs||1.2 -- the good and bad 1.2 have byte-for-byte identical .EXEs||1.3|
|Version shown by HELPME.EXE in top-right corner||1.0||1.1||1.1 -- the good and bad 1.2 have identical outdated manuals||1.1 -- the good and bad 1.2 have identical outdated manuals||1.3|
|Version shown by SETUP.EXE in top-right corner||1.0||1.0||2.0||2.0||2.0|
|Intro cutscene||Jazz points with gun on black background||Jazz cosplays as 3 superheroes||Jazz cosplays as 3 superheroes. But I've heard that some CD version had the gun/black intro?||Fullgame: Jazz cosplays as 3 superheroes. Demo: Jazz points with gun on black background.|
|Main menu look||Normal menu||Normal menu||Normal menu||Normal except during winter, then Jazz will wear a santa coat and snow will fall|
|Cheat prefix||P, backspace||P, backspace, DD||P, backspace||P, backspace||P, backspace|
|Apology mode||P, backspace, APOGEE||n/a||n/a||n/a||n/a|
|ARJAN cheat||Displays HAHAHA||?||Displays HAHAHA, shakes screen||Displays HAHAHA, shakes screen||Displays HAHAHA, shakes screen, gives 100,000 points|
|Birdshot bullet size||Small||Large||Large||Large|
|Episodes||1-6||1-6, A-C, Z (bonus levels)||1-6, A-C, Z (bonus levels)||1-6, A-C, X (Holiday Hare '94), Z (bonus levels)|
|Incompleteable levels or almost-incompleteable levels||None, all levels are good||Marbelara Secret||Tubelectric 2, Marbelara Secret||Orbitus 2|
|Tubelectric 2, first room||Hidden spring||Visible spring||No spring at all. To reach the top tube, run into the right tube at full speed. As soon as the right tube pushes you leftwards, immediately press and hold down and jump and release right. (You will jump off the floor at the right tube's ejection speed, making that jump very high. Holding down is necessary to jump as early as possible.)||Hidden spring|
|Tubelectric 2, end||Short||Long: The exit sign from 1.0 got replaced by a checkpoint, followed by a zig-zagging downward section surrounded by yellow and orange square bricks. You get a shield and a bird, then travel through a pipe to the exit.||Short||Short|
|Medivo 1 airboard ditch||Works||Broken||Broken||Broken|
|Ordering information after episode 1||One advertizement screen after "Let's not keep her waiting." This is in the fullgame release because you could order episodes 1-3 and episodes 4-6 separately.||None||None||None|
|Orbitus 1 airboard ditch||Works||Works||Broken -- but that keeps the level solvable because bouncy floors are completely broken, they behave like air.||Works|
|Orbitus 2||Fairly easy, can fall through cracks in bouncy floors||Fairly easy, can fall through cracks in bouncy floors||Requires a bounce off the bouncy wall because bouncy floors are completely broken, they behave like air.||Almost impassable without tool assistance. Bouncy floors have a huge trigger area, sucking Jazz upwards, away from the intended route. Even with slow-motion, this is excruciatingly hard. Cheat for an airboard (P, backspace, CSTRIKE) or copy MaxStrike's fix into Jazz 1.3.|
|Turtemple 2 airboard ditch||Works||Works||Broken||Broken|
|Jungrock bouncy flowers||Bouncy||?||Not bouncy||Not bouncy||Bouncy|
|Marbelara Secret||Passable via hidden spring||Incompleteable due to missing spring. Workaround: Cheat for an airboard (P, backspace, CSTRIKE), bypass the pillar, enter the cheat again to lose the airboard.||Incompleteable due to missing spring. Workaround: Cheat for an airboard (P, backspace, CSTRIKE), bypass the pillar, enter the cheat again to lose the airboard.||Passable via hidden spring|
|Dreempipes fuel raising/lowering speed||Slow: In the final room of Dreempipes 1, you can skip the first red switch on the right and instead swim immediately to the next red switch on the left. If you shoot the Dreempipes 2 speed shoes through the wall from the right, you won't have to hit red switches and can keep the speed shoes until the exit.||Fast water raising/lowering||Fast water raising/lowering||Fast water raising/lowering|
|Pezrock 2 airboard ditch||Works||Works||Broken||Broken|
|Battleships airboard ditches||Both the Battleships 1 and the Battleships 2 airboard ditch work in 1.0, in 1.1, in both 1.2s, and in 1.3. Battleships Secret correctly has no airboard ditch in any version.|
|Bonus stage music||End-of-episode music||End-of-episode music||End-of-episode music||Fullgame: End-of-episode music. Demo: Exoticus music.|
|Jazz Jackrabbit 1.0||JJ 1.1||Jazz Jackrabbit, good 1.2||Jazz Jackrabbit, bad 1.2||Jazz Jackrabbit 1.3|
The CD releases have episodes A-Z. The good 1.2 had slightly harder episodes A-C than the bad 1.2 and the 1.3. Especially Deserto 2 is very hard in the good 1.2. Here are all A-C differences that I know.
|Jazz Jackrabbit, good 1.2||Jazz Jackrabbit, bad 1.2 and 1.3|
|Raneforus 2 airboard ditch||Works in all 3 CD releases, even though the TAS notes claim that it's broken in 1.3.|
|Ceramicus 1, after 1st patch of carrots||High pole, tricky to jump over, but not too hard||Pole is one tile lower than in good 1.2, it's easier to jump.|
|Ceramicus 1, before 2nd patch of carrots||3 flying springboards that you must evade, otherwise they'll bounce you back to where you came from||No springboards to bounce you back|
|Ceramicus 1, near the end||A moving springboard moves inside a tunnel, directly below a ceiling. That springboard gets you permanently stuck in the ceiling.||Solid platform, you can't get stuck|
|Deserto 2||No carrots anywhere. On Medium/Hard/Turbo, this is is the hardest level in the game. Shooting the checkpoint is disadvantageous, then you can't recollect the 4-shield after dying.||5 patches with 2 carrots each throughout the level. Level has average difficulty.|
|Lagunicus Boss||Select Blaster to fire Toasters, select Toaster to fire RF-Missiles, select RF-Missile to fire Launchers, select Launcher to fire single birdshots that bounce and sound like Launchers. TNT functions normally.||All 5 weapons function normally.|
See also the great TAS notes by Ilari, Mothrayas, and slamo. They have lots of extra info, even if the list of version differences is not as comprehensive as mine above.
I'm Simon N. and have speedrun Jazz Jackrabbit since September 2016. Watch live at twitch.tv/simonnaar or send email to eiderdaus at the gmail.com.
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