@ Agent 9's Secret Egg.
That must be the egg you get after smashing all the boats. I just find it really illogical to have a egg just SITTING there without a use. I notice everything in this game GOES somewhere. NOT just poof- there. Proof of concept- Swim in the air in Dino Mines... The smashed wall goes underneath the main land.

@Area in Fireworks Factory (<3) and Midnight Mountain...
Really those are probably there was a reward for those people who love to hack. (Or are very clever and can get there without hacking)... Imo you should get 99 lives just for getting to the MM Island or FF Cave. oO
Or perhaps they were forgotten? Perhaps the MM Island was there as a taunter or something to be part of the backround... It could have been an area you were supposed to Fly to Via Fly Powerup. Possabilities are endless and Insomniac is full of questions.

I agree with the Agent 9 secret egg, that's what I think as well. I can't seem to get any of the Gameshark codes to work (although on my old computer they worked like a charm, but this particular Vista comp refuses to use ePSXe which is how I got them working in the first place) but maybe someone with Moonjump could try and get all the eggs in Agent 9's level and then see if it's still there?

Edit: Okay - Confirmation that the secret egg in Agent 9's lab is just the one you get for destroying the boats - It disappears after you knock them down.

Also, regarding MM Island - That was the original location for the Super Bonus World, according to someone at Insomniac. However, when he came back from holiday, they'd changed the level around and forgot to take the island out. There was going to be one huge whirlwind that took you there after you beat the Sorceress.

Also, I don't think this is a secret or anything (Beta work, I think), but I was just messing around with my game, and somehow (as in, I can't get it to work again) I ended up with the option of going to the Sorceress' Lair after Midnight Mountain in Evening Lake the first time the Rocket was finished.
I have a GS code active (Glide at same height/moonjump), but it doesn't seem to be working, and I figured that was it - Apparently not though, as I tried to go there again (slightly different way to last time - I went by the last savestate I had) and the option wasn't there. However, it's not taking me to her lair, but to the first boss. I'll post a video of the last part, as it doesn't seem to be allowing me to go any further.

edit: Okay, glitch just gets weirder. Will post a vid later.

Picture file

Then, today I loaded up the game to show a screenshot on this thread and the extra gem was gone from Spyro's inventory. Obscure or what?

To do the proxy jump, don't jump with X, just turn left and right, and try to stay centered.

Ahh yes I got it now. Thanks.

It is not that hard to get to the secret room in FF.

Do explain. I always have a heck of a time trying to get that proxy jump to work there. I notice turning in the videos... But they do not say if you need to jump or what. *makes a strange sound* I guess I am completely skillless at the jump or something because I have spent a total of a hour just trying different things. Gave up and booted up the Gameshark... -_-'

Now I did go to this area on a ORIGINAL version of this game (Well the "hacked" copy I just have to have) and never did get spit out opon going to the center... I STOOD there for about 15 minutes... Finally just hit start and went down to 'EXIT AREA'. Well I regret... exiting that area == suicide for Spyro. You might as well just poof your dragon bottom out instead of gliding back to the land you should be on. ^^

My thoughts are that the wall infront of the area was going to be smashable and a bridge was going to be behind it... Perhaps the "Christmas" Dino you see in the Agent 9 FPS in DM was going to be the boss. Perhaps they changed it to a SP because they did not have a challenge idea for another SP. We all note there are 4 SP PER World?

Personally. I thought it would have been exciting if they had a egg there. Woot 151 eggs. Then again... it would probably pop to be a dragon with no colours that would end up being a PURE white frame that stares and makes your game stick at it til you reboot...

@ Agent 9's Secret Egg.
That must be the egg you get after smashing all the boats. I just find it really illogical to have a egg just SITTING there without a use. I notice everything in this game GOES somewhere. NOT just poof- there. Proof of concept- Swim in the air in Dino Mines... The smashed wall goes underneath the main land.

@Area in Fireworks Factory (<3) and Midnight Mountain...
Really those are probably there was a reward for those people who love to hack. (Or are very clever and can get there without hacking)... Imo you should get 99 lives just for getting to the MM Island or FF Cave. oO
Or perhaps they were forgotten? Perhaps the MM Island was there as a taunter or something to be part of the backround... It could have been an area you were supposed to Fly to Via Fly Powerup. Possabilities are endless and Insomniac is full of questions.

But really. I think the Cave and Island are really things to make players ask questions...

Anyone have a video of this Midday Garden door thing?

Here: http://www.youtube.com/watch?v=S3agzAaA1qI

So that's what it's inside -- something that cut out from the game! it's empty, but the remains of the evidence remains. Dang. I actually tried using the superflame powerup to break it when I tried to find the last egg, no luck.