Every mini-game
At the start game screen select the Daffy Duck icon, then type in ?BN as a code to unlock all the mini-games.

All art gallery
At the start game screen select the Tweety icon, then type in .RT as a code.

No whack in boxes
At the start game screen select the Taz icon, then type in !WB as a code.

Level select
At the start game screen select the Marvin Martian icon, then type in #OP as a code.

Two player Boss games
At the start game screen select the Big Red icon, then type in *JC as a code.

Hints & Tips

Mini-games
Obtain all 100 sandwiches in a level to access a mini-game at the main hub. Then use the blue phone booth with a propeller in front of the level with the finished sandwich to access its mini-game.

Gladatoons: Trapping Daffy
Simply push Daffy to the tunnels that have up arrows all around in the tunnel to the left. There is a spring leading to one of the goals. Daffy would be trapped by going up and down if he locates the other path. You will still have time to win the game.

Beating Gossamer
When you have gathered up all the contraptions in Yosemite Zoo, you will go into the Elephant Pong mini-game. Then press Circle to Pong the elephant. The elephant will get quicker each time you do this and scare Gossamer. Obtain three goals to win.

Beating Mecha-Tweety
Wait until his shield has been shut down. Then, gobble up a crate and hit him with it. Do this three times. Next, gobble up a crate until the white cylinder is up. Now spit all four cylinders until their color become red. Avoid his attacks so you do not die. Finally, gobble up a crate and hit every lever so Tweety can be sucked out.

Beating Yosemite Sam
When your at Disco Volcano, jump to the middle and grab the chili pepper. Sam will be set to blow up the dynamite. Without you falling down to the lava, breath fire at Sam. If you do fall into the lava by missing the platform, you will have to try it again.