Mega Man Battle Network 2
Love this game
megaman nb2 has your favorite navi and characters from the TV series. For anyone that is a big megaman fan, this game would be perfect. It has a storyline that you can focus on or for those ventures, you can do side requests for people or venture into depths of the under net (you know who you are). Also there are so many chips in the game I have still not gotten them all and I have been playing since June. Also you get megaman's elec-style, fire-style, aqua-style, and wood-style.