I remember when this hit the Gamecube back in 2003, but I didn't get it until much later on. I liked the Battle Network games on GBA even though I never come close to finishing them. So this spin-off was to mix the Battle Network series with the classic Megaman gameplay.
Which basically meant you jumped and shot laser blasts along with the special cards from Battle Network. It didn't mesh together perfectly, but it was an alright system.
Probably would've been a good game if it wasn't harder as a diamond. The Megaman X games had some tough levels but they're a cakewalk compared to this baby. Which is kinda weird since I'm sure this marketed towards a younger audience. I sometimes wonder what Capcom thinks sometimes.