This is a rather simple variation of the dozens of possible rules you could have with a zombies game, and its what I'm planning on trying out when I get the chance.
The game starts with one zombie (aka alpha zombie) and at least 5 other humans. Scoring is based on time and on the last one who survivives is the alpha for the next game. Zombies can only use water bottles, and both sides can only use hoses for refilling. No high powered water weapons allowed. (i.e. pneumatic WBL's, Supercannon II's, etc. anything that relies on a bike pump or air compressor or anything more to reload)
When a human is hit with a water bottle splash, they immediately put down their blasters and turn into a zombie. No hits against zombies are counted. (This may cause some game problems in some situations, where people hide, etc. However a time limit can be placed to curb that problem, as well as limiting where people are allowed to go)
To put a twist on this and make it more interesting, perhaps the alpha zombie could start with an Oozinator. (with only the ooze loaded) Other weapons, such as squirt pistols or water balloons, could be allowed, or they could be limited to foam swords instead of water bottles. (to avoid having to refill)


