License
Fan, commercial,
custom.
Fan work, commercial use, and custom jobs can be licensed.
FAN
Fan work
Doujin, shorts, studies, a personal reel: yes. Credit Red Salt. Do not sell the source files as your own kit. Do not pass a character off as official.
COMMERCIAL
Commercial
Games, shorts, ads, and merch runs can be licensed. Keep the credit. Do not redistribute editable sources. Do not ship a competing zombie kit.
CUSTOM
Custom
Characters, vehicles, and rooms can be built to a brief. The world and the names stay with Red Salt. Tools and channels are a separate paper.