Generation II battles and training
Use original damage categories, preserve moves and handle Day Care deliberately.
Original international Game Boy Color cartridge, first released in Japan in 2000 and internationally in 2001. Japanese Mobile System GB features and the later Nintendo 3DS Virtual Console Celebi event are outside this guide. Generation II battle rules apply.
Read a move's type before its stats

Generation II divides physical and special damage by type. Normal, Fighting, Flying, Poison, Ground, Rock, Bug, Ghost and Steel are physical; Fire, Water, Grass, Electric, Psychic, Ice, Dragon and Dark are special. A Pokémon's Attack or Special Attack therefore matters according to the move's type. Do not apply the later icon-based split. A coverage move is useful only when its damage and matchup suit the user.
Use held items and conserve PP
Each Pokémon can hold one item. A Berry can trigger healing automatically, while other items support particular attacks or recovery. Read the item before equipping it and replace a consumed Berry after the battle. Pokémon Centers restore move PP as well as HP. On a long route, share routine encounters across teammates so the Pokémon needed for the boss does not arrive with its best move exhausted.
Monitor the Day Care and friendship
The Route 34 Day Care raises deposited Pokémon as you travel and can produce Eggs from compatible parents. Check the pairing and leave a party slot when collecting an Egg. Newly learned level-up moves can overwrite old moves in Day Care, so inspect the moveset after retrieval. Walking with an Egg hatches it. Friendship also affects certain evolutions, including Eevee's day or night evolution when its friendship is high enough.
An attack's type decides its physical or special category in Crystal.
Picture details
Game artwork belongs to its respective rights holders.
