In the US release, going to Cobalt Coast in Pikachu's Play Days leads to a Piñata party where Pikachu has to hit a Pokéball Piñata. In the Japanese release, Pikachu instead plays a similar game called Suikawari.

The objective of the game is to hit a watermelon with a stick, with Pikachu wearing Ash's hat from the anime series to cover his eyes. There are watermelons scattered around along with bananas. Pikachu can trip on the watermelons a couple times before he has to quit the game, whereas tripping on bananas is an automatic game over.

If Pikachu loses, he gets a Soda Can Tab in the Japanese release, and a bottle cap ring in the US release's "Pokéball Piñata".