I just figured out how to play a custom CTF level in JJ2 Shareware. You can have only 1 level though. All you have to do is download a CTF level. Then make a back up of Sharectf.j2l which is in the JJ2 Shareware folder. Then copy the custom level to your Shareware folder along with its tileset and music. Then rename the level to Sharectf.j2l and run JJ2 Shareware. And you can run the custom ctf level in the JJ2 Shareware. Do the same for treasure except the file is called Sharetrs.j2l

I tried it with Single Player but sadly, only certain levels will run. For example I tried Tubelectric and I got this message "The level you tried to access contains a refrence to the animation 'PINBALL'
which is not in the shareware version of Jazz Jackrabbit 2.
You are not able to play this level." So far we only know that levels with pinballs in them won't run. To do it for Single Player you do the same thing except the files are called Share1.j2l, Share2.j2l and Share3.j2l. The downside is that you can only have 3 SP levels.
I hope you liked this thread and Happy Jazzing!!!

I sincerely doubt many people here only have the Shareware version of JJ2... in any case, yeah, renaming files is a fairly simple thing to do.

As for animations, I would assume any event not found in the shareware levels wouldn't work.

I've thought about that also.

But luckily I have the full version containing the HCList. ;D

It is just something neat you can do with JJ2.

I did the same with the TSF demo.

I remember doing the same thing back in '98 or '99 (I can't remember exactly when) and I hosted a few custom levels, too. Some people on a few occasions joined (I particularly remember one game in The Diamondus Mines) and playing online was was fun when my AOL wasn't acting up. Being able to do this trick got me more interested in the game, which was why I decided to get the full version. Good times.