Probably one of the most significant changes in Crystal is the introduction of the Battle Tower, which is located west of Olivine City. In the Battle Tower, you enter in three Pokemon (they can't be the same species, and they can't be holding the same items) and you'll fight in seven consecutive battles (but you'll be healed in between, and you can save too). After beating all seven, you'll get a good prize. There are 10 difficulty levels, lv10, lv20, lv30 and so on until lv100. Your Pokemon may not enter a difficulty below its current experience level. Click on the links below to see a list of the Pokemon you can find on each level.
