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

thelab.dat.bz2 as .bz2
thepit.dat.bz2 as .bz2
thering.dat.bz2 as .bz2
thomas.dat.bz2 as .bz2
tm.dat.bz2 as .bz2
topsy.dat.bz2 as .bz2
trainin.dat.bz2 as .bz2
trainout.dat.bz2 as .bz2
treehous.dat.bz2 as .bz2
tunnels.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)