Anyway, I checked it out a long time ago, and I found loads of beta (content not available in the released version under normal circumstances) rooms and special features hidden in the rom.
I thought I'd share some screenshots here:
There's a map select screen, where you can access all maps and cutscenes in the game.
Here's an alternative Dark Link battle room, with no visible entrances or exits.
This is a beta Stalfos boss battle room, with a door that doesn't work.
This is another Stalfos room, called "Middle Boss Room"
Here, there are loads of chests where you can get every single item in the entire game (except quest items). There are doors that function, but you can just walk through them for some reason.
This is a basic physics test area where common things like running, jumping, and swimming moves can be tested. There are also non-functioning ladders and holes in this room.
In this same room, there is a beta Ocarina Pedestal which doesn't appear to do anything.
This is another test room, called "bamboo test" for some reason. The different colors on the ground represent different terrains and sound different when stepped on. In the first screenshot, there's a floating pot, and if Link touches it, he gets damaged, so it's probably a glitched posessed pot that's frozen and doesn't smash. Also, there appears to the the letters "SRD" on the ground. Those are probably the initials of one of the creators. (Or "Senior Research and Development". Thanks Meta Fish, I didn't think of that.)
Another beta room, but this time, I've placed a beta monster in it, called an Arwing (probably from Star Fox, but I don't know why there is data for it in this game).
Aside from beta rooms, there are also other functions, like the camera tool, where you can freely move the camera and even make your own cutscenes:
It is also possible to pause cutscenes and control Link during that time. Here, I've paused Zelda's Light Arrow cutscene and placed a bomb in front of Link, making it look like Zelda's attacking him:
There are also other functions like audio debug and variable editors, too but I haven't got screenshots of them yet.
On another topic, people always wanted to know about there being a Triforce quest in OoT or not. I can say that so far, I haven't found anything regarding that. On youtube, there are videos of Link walking up to the Triforce in the Sacred Realm, but it's probably a faked video where someone paused the Triforce cutscene and just recorded Link walking in the cutscene.
Anyway, what do you think? Using the debug rom, is it possible to finally know the truth behind the Triforce rumors?
