Mega Man Battle Network 3

The gameplay in Battle Network 3 is similar to that of its predecessors, with few graphical enhancements and minor gameplay changes. Battle Network 3 saw the removal of Power-Ups that were collected to improve the MegaBuster - instead the Navi Customizer was added, allowing abilities to be added on with certain rules as to how these abilities can be added with respect to each other. (wikipedia.org)