Ape Escape 2

Easy 999 Coins:
On your second time through the game, go to Simian Citadel and track down the magician monkey, Tommy, who hangs out by the fountain. Don't net him! Instead, let him summon his mouse thieves, and let them steal some of your money. When you hit them and they drop your coins, there will often be enough floating around to trigger the multipliers, turning the single coins that they stole into x 5 and x 10 coins. Grab them and you'll have way more money than you started with. Since Tommy will always supply more thieves, you can do this over and over until you've maxed out your coinage.

Scroll Credits Faster:
To scroll through the credits quicker, hold down X.

Unlock Spike:
Unlock Spike by completing the game with all 300 monkeys. Go to the main menu and hold L1 and press START on New game to play as him.

If you complete the game with Spike with all 300 monkeys, you will see him on the main menu.