Jazz 3..?
 

I do not normally complain that people don't bother to Google things, but I'm going to here.

http://www.jazz2online.com/j3f/

and http://www.jazz2online.com/J2Ov2/wiki?Jazz_Jackrabbit_3 contains more info

And just for the record (not to mention shameless plug #3):

Jazz Jackrabbit 3, the game that never was...
The Jazz Jackrabbit 3 demo deserves a special mention because it was never meant to be released for the public. The demo was a special "Publisher Test Demo" to show off features of the game and entice publishers to release it, as JJ3 was far from finished when the demo was made. As it's not a public demo (they're made when the game is just about done anyhow) it's illegal to spread around. Just so you know, JJ3 was abandoned because no publisher was willing to take it in. That doesn't make it less illegal though.

So nobody gets ideas :p

- JelZe GoldRabbit =:3

Demo has been improved by community members who got multiplayer properly working, custom maps and general bug fixes.

I thought it was about time for one of these topics. Anyway, it's just a demo. Or alpha. Whatever floats your boat.

Proof of concept.

The game calls itself a demo.
The end of the massive basement level reads Highlight block to show spoiler: "Cosmo the evil wizard has taken the baby to his lab! Unfourtantly, that area is nto in this demo"
Or something like that

Stijn: Note that not everyone may want to know the ending from someone else :P

Jj3...
 

your welcome

I only ever got up to the castle level =(