Here we have the Pre-Release pictures for PokéPark Wii - Pikachu's Great Adventure. Pictures from the official website and Serebii.

• Pikachu at the Beach
• Pikachu meets Glalie
  
• The Marine Slide Attraction
  
• Pikachu assists Bidoof
  
• Pikachu assists Buneary
  
• Pikachu & Lapras
  
• Pikachu assists Pachirisu
  
• Pikachu faces Charizard in Battle
  
• Pikachu in a Field
  
• Pikachu battles Snorlax
  
• Pikachu & Froslass
  
• Pikachu holding an item in a Volcano
  
• Starly overtakes Pikachu in a race
  
• Pikachu encounters Slowpoke
  
• Pikachu swings on a rope in a forest
• Pikachu battles Feraligatr
  
• Pikachu meets other Pokémon
  
• Charizard in the Sky Race
  
• Rhyperior, Torterra, Venusaur & Flareon fighting in a ring
  
• Corsola asks a question in the Trial of Strength
  
• Pikachu races against Arcanine in the Trial of Strength
  
• Pikachu races against Ponyta in the Trial of Strength
  
• Mew
  
• Pikachu falls to the PokéPark
• The Bulbasaur Foot Race
  
• The Bulbasaur Foot Race Winners
  
• Pikachu & Tropius
  
• Pikachu leaves Venusaur's Hut
  
• Pikachu & Electabuzz Spark Up
  
• Pikachu & Ponyta race
  
• The Island
  
• Pikachu runs past some Pokémon
  
• Pikachu, Leafeon & Scyther
  
• Pikachu battles Scyther
  
• Bidoof
  
• Mudkip
  
• Pikachu lines up for Bulbasaur's Dash Race
  
• Venusaur checks Pikachu's Jump distance
  
• Pikachu deflects cannonballs
  
• Selecting your Marine Slider Pokémon
  
• Corsola in the Marine Slider
  
• Pikachu enters a snow area
  
• Pikachu enters an area filled with ghosts
  
• Pikachu enters a mineshaft
  
• Pikachu on a mine cart
  
• Lapras is on an Icy Water Race
  
• Lucario in a target practice attraction with Rayquaza
  
• Pikachu & Mr. Mime
  
• Pikachu battles Mamoswine
  
• Pikachu & Buneary dance
  
• Drifblim carries Pikachu away

Pictures from Serebii