Dudes, dudes! I hacked 4 player support to that game years ago, get the most updated version here:-
http://enaysoft.co.uk/jumparound.zip

I also disabled the highscore system, I couldn't see the point of having it in a game that didn't have static levels. I mean you could add more fruit in your own build and have a huuuuge score.
If I also recall, 4 player version works fine, except though if one player dies everyone goes back to title screen, never totally finished that implementation off.
Have fun!
http://enaysoft.co.uk/jumparound.zip

I also disabled the highscore system, I couldn't see the point of having it in a game that didn't have static levels. I mean you could add more fruit in your own build and have a huuuuge score.
If I also recall, 4 player version works fine, except though if one player dies everyone goes back to title screen, never totally finished that implementation off.
Have fun!