This is the process of evolving a Pokémon in Pokémon
Pinball.
Step 1: Spell "EVO"
Make sure you have Pokémon that can evolve. To
start Evolution Mode, get your pinball up the right ramp three
times. This will spell EVO.
Step 2: Enter Evolution Mode
In the Ruby table, the "Pokémon Mart"’s sign changes to "Pokémon
Center". Get the ball up the orange ramp leading to the "Pokémon
Center" to begin Evolution Mode.
In the Sapphire table, the screen above Plusle and Minun will
now read "EVO". Get the ball in the hole between Plusle and Minun
to begin Evolution Mode.
Step 3: Evolution Mode
For Evolution Mode, choose a Pokémon that can evolve from the
menu.
To evolve your Pokémon, you must collect items needed for the
Pokémon to evolve. These can be found anywhere in the pinball
table. Collect three items, and get your ball into the hole to make
your Pokémon evolve.