Hard mode - Successfully complete Metal Gear Solid once
Unlock Ape Olympic - Buy this in Hobby Shop for 1500 credits
Unlock Mesal Gear Solid - Win the game once & buy in Hobby shop for 573 credits
Unlock Sarutimate Fighting - Buy this in Hobby Shop for 1500 credits
Unlock Sarugecchu 3 Tatsujin Title screeen - Complete the survival mode.
Unlock Survival Mode - Capture all apes and catch Specter a second time
Monkey Movie Studio:
Collect all 20 video files
Unlockable Mini-games(US version):
The first 2 mini-games cost 1500 gotcha coins, while
Mesal Gear Solid costs 573 Gotcha coins.
Beat Specter once - Mesal Gear Solid
Achieve 25% or 50% completion - Monkey Throw Stadium
Achieve 75% completion - Ultim-ape fighter
Cheat mode
Go to title screen, then press Start, then hold L1 + L2 + R1 + R2 after
press Start to bring up the password entry screen. After enter any of the
following codes:
Unlock Blue Pipotron in the Flying High Monkey stage
Enter "coolblue" as code.
Unlock Dark Master in the Kung Fu Alley stage.
Enter "blackout" as code.
Unlock Red Pipotron in the Let's Go Out With The Monkeys stage
Enter "redmon" as code.
Unlock SAL-1000 in the Castle stage
Enter "grobyc" as code.
Unlock SAL-3000 in the Space TV Fortress stage
Enter "SAL3000" as code.
Unlock Shimmy in the Winterville stage
Enter "2nd man" as code.
Unlock Spork in Hide-n-Seek Forest stage
Enter "krops" as code.
Unlock Yellow Pipotron in the Monkey Go stage.
Enter "yellowy" as code.
Unlock Gageru
Enter "rusarukeka" as code. (Only in Japanese version)
Unlock Kuro Sennin
Enter "kuroihoumonsha" as code. (Only in Japanese version)
Unlock Pigaru
Enter "futarimenootoko" as code. (Only in Japanese version)
Unlock Ratchet in the Space TV Fortress stage
Enter "ginganoraihousha" as code. (Only in Japanese version)
Unlock Mesal Gear Solid mini-game:
Enter "yumenokyouen" as code. (Only in Japanese version)
Unlock Mesal Gear Solid scenes
Enter "2 snakes" or "futarinosune-ku" as code.
Unlock Survival mode:
Enter "sabaibaru" as code in the Japanese version.
Alternately, capture all Apes then catch Specter a second time.
