Secret rooms are a special type of room in Ziggurat. They are accessed by a door, just like any other type of room in the game, but doors to secret rooms are concealed in the game and don't open automatically as you walk by them.

There's one secret room per level.

The room contains a random perk card, which can be useful or not (note that there are perk cards that have somewhat negative effects!) and a spot where you can read a small snippet of information about another Milkstone Studios' game or prototype:

Remember that secret room doors are... well... doors. That means that there are only a few places on the room that the door will be placed.

You don't need to check every pixel of the walls to find secret doors. Just take a look at where a door should normally be. Eventually you'll just "get" where secret doors might be, and you'll find them pretty quickly.

This is what a secret door looks like (at least on the earliest levels of the game)

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The door won't open just by walking by it like regular doors. In order to open it, you need to shoot it. It takes a few shots with the magic wand to break the wall and reveal the passage to the secret room

CORRECTION: According to WaaghMan, any room may contain a secret door! So keep your eyes open at the spots where a regular door should be!

Not every room may contain a secret room door! There's no need to look for secret doors everywhere!

Some of this locations may contain a secret room door:

• Normal rooms
  
• Hazard rooms
  
• Key rooms

Secret rooms doors will never appear in:

• Start room
  
• Boss room
  
• Lore room

* This guide is not exhaustive and may contain errors! Comments and fixes are welcome!

Thanks everyone for sending screenshots of your secret room finds! Linked to their original authors:

Here are other screenshots sent by readers of the guide! Thanks!

Defendor
Defendor has reported the first secret room ever on a Boss Room! Thanks!
http://steamproxy.com/sharedfiles/filedetails/?id=514365812


Silver
http://steamproxy.com/sharedfiles/filedetails/?id=365350422

Belphegor926
http://steamproxy.com/sharedfiles/filedetails/?id=353930291

Stealthy Sheep
http://steamproxy.com/sharedfiles/filedetails/?id=332718466
http://steamproxy.com/sharedfiles/filedetails/?id=332662980

ruiner
http://steamproxy.com/sharedfiles/filedetails/?id=345314243