You're a cute little bunny and you have to avoid the other bunnies from stomping on you and at the same time try to stomp as many opponents as possible. Jump & bump is multiplayer only with up to four players simultaneously. Gather the local crew and have a blast.

Jiffy plays with the arrow keys
Fizz plays with j, i, l
Dott plays with a, w, d
Mijji plays with 4, 8, 6

Network play
freshmeat record

BeOS (screenshot)
CVS
Source (Linux, *BSD, Hurd, Windows, BeOS) tar.gz Debian GNU/Linux package
FreeBSD ports
RISC OS
RPM package (src, i386)
Mac OS X package
Windows (screenshot)
Windows (old but with networking)
DOS | bzip2 for DOS/Windows

Level making | Level selector (screenshot)
Latest 15 levels
Contact | irc.gnu.org #jumpnbump

kicko.dat.bz2 as .bz2
kingofth.dat.bz2 as .bz2
kirby.dat.bz2 as .bz2
kirbydm1.dat.bz2 as .bz2
labrinth.dat.bz2 as .bz2
lake.dat.bz2 as .bz2
logs.dat.bz2 as .bz2
lolly.dat.bz2 as .bz2
ma.dat.bz2 as .bz2
mario.dat.bz2 as .bz2
1 2 3 4 5 6 7 8 (9) 10 11 12 13 14 15 16 17 18 (Total 178 levels)