Hidden Characters (Puzzle Mode)

At the Puzzle Mode screen (were you select A or B) press Left, Left, Up,
Down, L, R, L, R, and then L&R at the same time. This will bring up a character
select screen, in which you can select either color dino, or one of the bosses.
Be sure to press each button slowly -- don't go too fast.


First-person fight view

On the title screen, press the L button, Up on the control pad, the R button, then
Down on the control pad. If done correctly, a little green dude will appear in the
bottom-right corner of the Title screen. When you go to Puzzle Mode, notice
the Another World option below it. This new option is your ticket to a brand
new world of puzzles.