This is the first accessible code.


Step 1
Find the levels and secrets book thing.



Step 2
Flip to the end of the book.



The QR code here will give you access to a secret level. How it does so is spoilered out below.

You receive an email address: banana@triband.net. Sending an email will prompt an automatic reply giving a link to a hidden page on the game website. On this page, you can open up a secret custom level in game.

The QR Code by itself:
https://steamuserimages-a.akamaihd.net/ugc/2484388723402514083/0727958FB9AC5069C985F108C46BB1148EF157B0/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

This is the next easiest code to find.


Step 1
Find the extras room entrance at the main hub.



Step 2
Get to the data room near the end.



Step 3
Check behind the monitor.



The QR code here will give you access to a secret level. How it does so is spoilered out below.

You receive an email address: horses@triband.net. Sending an email will prompt an automatic reply giving a link to a hidden page on the game website. On this page, you can open up a secret custom level in game.

The QR Code by itself:
https://steamuserimages-a.akamaihd.net/ugc/2484388723404133175/A64EE474BE2D55665CBC054AB52AEB807C26883F/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

This is found after the first couple of episodes.


Step 1
Find this secret entrance by Episode 3.



Step 2
Go around the narrow ledge by the entrance, use a hidden spring board, and continue up the path.



Step 3
You will reach an invisible path. Stay between the traffic barriers until you reach the QR code.


The QR code here will give you access to a secret level. How it does so is spoilered out below.

You receive an email address: horse@triband.net. Sending an email will prompt an automatic reply giving a link to a hidden page on the game website. On this page, you can open up a secret custom level in game.

The QR Code by itself:
https://steamuserimages-a.akamaihd.net/ugc/2484388723402884389/A5BC40550735E5E6FBEF450D19ECE0F667C29C16/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

This was the first I actually interacted with, but it's found near the mid game.


Step 1
Find this secret entrance by Episode 5.



Step 2
Navigate the maze until you see the snake room.



The QR code here will give you access to a secret level. How it does so is spoilered out below.

You receive an email address: snake@triband.net. Sending an email will prompt an automatic reply giving a link to a hidden page on the game website. On this page, you can open up a secret custom level in game.

The QR Code by itself:
https://steamuserimages-a.akamaihd.net/ugc/2484388723402202375/BABDFCDBD91FE082C4232C6FF880A0A94BEC467E/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

This is found after completing the main campaign episodes (after Episode 7).


Step 1
Get to Episodes 8 and 9 after completing Episode 7 and crossing the previously broken bridge.



Step 2
Look behind the Episode 9 sign.



The QR code here will give you access to a secret level. How it does so is spoilered out below.

You receive an email address: seagull@triband.net. Sending an email will prompt an automatic reply giving a link to a hidden page on the game website. On this page, you can open up a secret custom level in game.

The QR Code by itself:
https://steamuserimages-a.akamaihd.net/ugc/2484388723404062450/90DD9F24C378CA4EC60FEBA43598BFFD9B6BC785/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

Just leaving a list of misc secret levels in the same style as the ones associated with the QR codes here:

Voting and Feedback Level: Getting to the end of the episodes (currently after beating Episode 7 as of October 2nd, 2024) currently shows a button next to an unfinished episode where you can give feedback and vote on the next theme. Doing so will give a link to another secret level.