Pokémon Puzzle Collection brings together four types of puzzles, each with 20 levels. Every puzzle you solve adds a Pokémon to the game’s Mini Dex, with a short animation. A sequel, Vol. 2, was released in Japan only, on April 26, 2002. Here is what they contain, based on Serebii.

The Pokémon Puzzle Collection manual.

Pokémon Puzzle Collection

PuzzleUnlockHow it works
Motion PuzzleFrom the startRebuild a Pokémon’s picture by swapping the squares of a 4 × 4 grid. The picture is animated, more and more so as the levels go on.
Shadow PuzzleFrom the startFill a silhouette with pieces, like a jigsaw puzzle; B rotates them a quarter turn.
Rescue MissionFrom the startSlide blocks to clear your Pokémon’s path to the exit, like a sliding puzzle.
Power OnAfter 30 puzzlesMove the pieces of a circuit to light Pikachu’s bulb.

The first Motion Puzzles feature Poliwhirl, Teddiursa, Hoothoot and Snubbull, followed by Octillery, Sudowoodo, Shuckle and Elekid.

Pokémon Puzzle Collection Vol. 2

The sequel keeps the Motion Puzzle and the Shadow Puzzle, and adds two new puzzles: Pick Up and Stretch Puzzle. The first Motion Puzzle shows a Shellder, followed by Xatu, Politoed and Mr. Mime.