The authors of the game released it as e-mailware. That is, if you play the game, you have to send them an e-mail saying where you're from and what you thought about the game.
NOTE: This game can be played directly in Windows using a source port (see the links section below).
During gameplay, type in one or more of the following toggles:
jetpack (players have jetpacks - press up for thrust)
pogostick (players bounce constantly)
lordoftheflies (flies follow the bunnies instead of dispersing)
bunniesinspace (low gravity)
bloodisthickerthanwater (water turns to blood)
From the command line:
jumpbump.exe -fireworks (twisted screen saver)
Description by Brainchild Design