I had another idea:
Wacky Races.
Everybody spawns as adv grangers in the same place (lots of eggs needed). The map features checkpoints, which need to be passed through in a certain order to complete one course. First one to complete a certain number of courses wins (let's say 3).
To add to the fun, the granger spit is slower (say, 1 every 5 seconds) but it works on the other grangers and completely stops whoever it hits for 3 seconds.
Need to find some hilarious effect for the slash too, such as changing the victim's color hue.
Also consider changing the jump and taunt to something silly, such as boing-boing and moo'ing sounds.
I have absolutely no idea how you'd go about implementing checkpoints and start/finish line.
Nor how you'd keep track of the track advancement of each player as the game progresses (ie. what checkpoint they need to go through next and when they've won).
For added hilarity: powerups that spawn randomly along the course and when picked up affect the players in certain ways for a limited amount of time. Splash spit that affects all players within a radius, increased speed, increased jump, spit that nullifies the victim's wallwalk ability, granger zap etc.
