Activate the following cheats by entering the corresponding codes:

CHEAT FUNCTION - CHEAT CODE
Celebi appears in entrance area - 2115 4585
Darkrai appears in the House Zone - 1670 3396
Groudon appears in the Magma Zone - 9336 0553
Jirachi appears in the Stone Zone - 8848 4977
Pikachu's balloons in Pelipper's Sky Flap Race - 8037 3821
Pikachu's snowboard in Empoleon's Snow Slider - 4169 5651
Pikachu's surfboard in Gyarados' Marine Slider - 7887 2252

Go to Venosaurs's Vine Swing and pay Venosaur 5 berries to play. Select a skillfull character (check the rules) and try getting the character's bonus. You get 100 berries for getting the bonus. Repeat for an infinite supply of berries. One round takes about a minute. In ten minutes you can have about 1,000 berries.

When close to pokemon being chased, use thunderbolt (A) to stop the pokemon in its tracks, then just dash into them.

Hit 2 just as the countdown ends to get a starting boost in Bulbasaur's Daring Dash, Dusknoir's Speed Slam, or Absol's Hurdle Bounce.

Activate the following cheats by entering the corresponding codes:

CHEAT FUNCTION - CHEAT CODE
Celebi appears in entrance area - 9964 5049
Darkrai appears in the House Zone - 2043 3557
Groudon appears in the Magma Zone - 4559 4012
Jirachi appears in the Stone Zone - 8240 1777
Pikachu's balloons in Pelipper's Sky Flap Race - 5742 9445
Pikachu's snowboard in Empoleon's Snow Slider - 0482 3523
Pikachu's surfboard in Gyarados' Marine Slider - 8492 5064

Activate the following cheats by entering the corresponding codes:

CHEAT FUNCTION - CHEAT CODE
Celebi appears in entrance area - 9964 5049
Darkrai appears in the House Zone - 2043 3557
Groudon appears in the Magma Zone - 4559 4012
Jirachi appears in the Stone Zone - 8240 1777
Pikachu's balloons in Pelipper's Sky Flap Race - 5742 9445
Pikachu's snowboard in Empoleon's Snow Slider - 0482 3523
Pikachu's surfboard in Gyarados' Marine Slider - 8492 5064