 If you liked
Rockman.EXE
|
 ...then you might like
Gundam Build Fighters
|
both are about boys who were bad players at a popular arena battle game, but then gets a new awesome Gundam/Navi that helps them become one of the strongest players there is
Differences: Gundam is about robot toys and the story has the main character's partner as his Gundam's pilot; Mega/Rockman is about virtual AI and the story has the main character's partner as the AI