These are perfectly fine levels. They set out what they seek to accomplish with no unnecessary frills along the way. The eyecandy is little more than it takes to distinguish wall from non-wall, with occasional tile bugs but no great level of detail. The code is slightly buggy (strange number display in the secret level; arrows point toward gems while they’re still being collected in Medivo) but generally works and is sufficient for a set of quick experiments. Level design makes a good effort at not just being straight lines, and there’s a respectable variety in enemy/obstacle choice. The different levels’ objectives are similar enough to make the pack coherent yet different enough to keep things interesting. All in all a successful outing.
Operation Cleanup: Turtle Terror Revisited
Single player, by happygreenfrog,
requires 
The Secret Files, with JJ2+
Description
Ever wondered what it would be like if your level objectives weren’t the same in every level? In this level pack, the objective changes every level. The objective is explained by a sign at the start of each level.
The level pack ends with a new custom boss for you to battle, which is set up to be easier or harder depending on the difficulty setting you chose.
On top of that, there’s also a secret level with a new objective not found in any other levels in the pack. See if you can find it!
This level pack isn’t intended to really have a story, but if you really want one: Jazz is returning to Diamondus, Tubelectric, and Medivo to tie some loose ends. What loose ends? I have no clue.
Have fun!
NOTE: Download the new version, please! The old version was missing a few necessary files.
Thanks to Violet CLM for notifying me!
Credits & Acknowledgements
Scripting help from Violet CLM and Sir Ementaler, Jazz Jackrabbit 1 enemy script by Violet CLM, Tilesets from Jazz 1 (Tubelectric and Diamondus conversions by NOKA, Medivo conversion by >CelL<), songs from Jazz Jackrabbit 1, episode select graphics (font included) from Jazz Jackrabbit 1
Contains 30 Files
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Reviews and comments
Violet CLM 17 May 2018, 23:02
SmokeNC 18 Sep 2018, 15:55
Fun levels, JJ1 tilesets and enemies give it a nice theme. Though I expected a second phase for the boss.
Slaz 25 Mar 2026, 23:29
8
I liked how each level in this pack set a different objective to be completed. The levels all look pretty simplistic with little eyecandy and no complicated pathfinding. The 2nd level (Tubelectric) stood out to me the most, with a barrage of sentry bullet thingies coming from all ways on Hard difficulty. The boss was an interesting gimmick, albeit a bit easy. Overall I recommend this pack as a little diversion from your usual JJ2 SP custom level.