Crash Bandicoot 2: N-Tranced Cheats

Rock The Casaba is probably the hardest box gem on the planet.
The bonus is impossible to do with the nitros. So follow these steps.
1. Finish the magic carpet bit and then fall in the hole. Get the checkpoint.
2. Finish the level down there (you might get a gem shard) and hit the nitro detonator.
3. Go back to Rock The Casaba and get all the boxes you missed. When there is two near one of those fire people, leave ONE! (extremely important)
4. Do the bonus without the nitros (still quite hard, but possible)
5. Go back to the end of the level. (NOTE: If you didn't leave the box in step three, you will not be able to finish the level. I got it the first time I wanted to play and I had to start all over again cause I couldn't reach the end of the level)
I Give only ONE Warning!
6. Enter the porthole, remembering to collect the gem.
And that's that.

When you get that puppet mask floating behind Crash, press Start and go to the Warp Zone. When you go to the Warp Zone, notice that you have the Puppet Mask floating behind you. Then, go to a level and do not die or lose the puppet. As soon as your puppet mask gets yellow (from getting the puppet crate), press Start and go to the Warp Zone. When you get out. you are in the Warp Zone again with the yellow puppet. Go to any Boss that you are having trouble with. It will easier because you have enough power to survive two hits. This trick works well with N.Tranced.

To unlock secret levels and modes, link Crash Bandicoot 2 N-tranced to Crash Bandicoot: The Huge Adventure.