洛克人系列
Mega Man Battle Network 4 is a video game developed by Capcom for the Game Boy Advance (GBA) handheld game console. It is the fourth game in the "Mega Man Battle Network" series. The European version featured a completely different logo, which was also used on Mega Man X7, Mega Man X8, Mega Man Zero 2, Mega Man Zero 3, Mega Man Zero 4, , Mega Man Network Transmission, Mega Man Battle Chip Challenge, Mega Man Battle Network 3, and Mega Man Battle Network 5. Like "Battle Network 3" before it, "Battle Network 4" has two different versions, Red Sun and Blue Moon, that differ in story and gameplay details. "Battle Network 4" is compatible with the e-Reader, and can be linked up with "Rockman EXE 4.5 Real Operation" and the Battle Chip Gate for NetBattles. It is able to link with "Mega Man Zero 3", and contains references to Konami's "Boktai" series.