Kai's Trash Map is a new map added in 1.2. It's made by Kai-Li, the news feed translator in the WoP site, and the creator of the mapping tutorial. This map started out as a simple custom map, until the WoP team noticed it and how well made it is, and decided to add it as a default map. The same thing happened with oregano4's plane later, in 1.6.
Kai's trash map is huge, and therefore there are 2 of almost all the weapons:
2 Pumpers, 2 Balloonys, 2 Bettys, 1 Boaster, 1 Splasher, 2 Bubble.G.'s and 1 Imperius.
This map has 2 Jumpers, 1 Speedy, 1 Visionless, 1 Revival, 1 PadPower, 1 Floater, 1 Killer Ducks, 1 PadShield and 5 Health Stations.
This map supports all gametypes (Safe for CTF)
The BB Version Edit
Kai's Trash Map is the only default map which is almost entirely changed in the BB gametype. Not only is the map set in day time instead of the usual night time, but a lot of areas have changed as well, for example: The container is emptied out with a crate in it, the barrel with the fire is knocked over, the fire escape staircase is changed a bit, and the playground.