Thumbnail for the A Really CD DA challenge.
A Really CD DA is a challenge game mode that was added to Project Zomboid in build 31 (February 10, 2015). It is explicitly inspired by the Really Bad Day challenge from the 2013 survival game Cataclysm: Dark Days Ahead (often abbreviated as CDDA). Its title is intended to be read as A Really Seedy Day.
In-game challenge description
You get out of the shower and fall badly. You're blind drunk, and have a nasty cold.
On top of all this, the house is on fire! Today is definitely not your day.
[A challenge inspired by 'A Really Bad Day' from the awesome, wonderful, and MUST-PLAY Cataclysm: Dark Days Ahead]
General scenario description
Regardless of what clothing options the player selects during character creation, they will be immediately stripped nude upon beginning the challenge and will start with no items. They will also be drenched, utterly shit-faced, have a runny nose, and be bleeding due to glass shards lodged in their groin. The spawn point is a one-story house in northern Muldraugh, which will be partially consumed by fire, requiring the player to escape in a matter of seconds or risk being afflicted with burns.
Zombie Population appears to be set at Insane.
Ensure your character runs upwards towards the Muldraugh farmhouse, it is advisable to stay here for a day or two to heal up and read skill books if found.
There is also a cabin that is located in the right direction of the farmhouse, containing some additional loot and a wood stove. Follow the railroad, and go a bit up from it, the cabin is near Dixie.
Good luck surviving.