Level 0 is the first level of scratchrooms. For now there are no creatures on it, but screw it may change. At this level sanity drops by 1 unit from 30 to 60 seconds making it the level where sanity drops the slowest. It is also the only main level where there is no darkness effect. Chests and other level additions are not generated at this level. Almond water is generated, however, but rarely.  

From level 0 we can get to level 1 and sub levels for now it is Manilla Room and Danger Zone