The game blends story exploration with grid-based battles. In combat, MegaMan.EXE moves within a six-panel field, dodging enemy attacks and firing Battle Chips drawn from a custom folder. Progress is driven by main story missions, network exploration, side requests, and a bracket-style tournament structure. Chip codes, elemental matchups, and folder composition all matter, and the Blue Moon version changes some exclusive encounters, rewards, and scenarios compared with Red Sun.
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Lan Hikari
The human protagonist who operates MegaMan.EXE and advances the story in the real and digital worlds.
MegaMan.EXE
Lan's NetNavi and the main combatant in battles across the network.
Baryl
A major character associated with Blue Moon content and related scenarios.
AquaMan.EXE
One of Blue Moon's version-linked Navis and an important combat encounter.
Build your folder around a few consistent chip codes so you can chain attacks reliably. Learn enemy patterns before committing to aggressive setups, and use movement to avoid wide-area attacks. Keep recovery and defense chips in reserve for boss fights, and take time to explore network areas for HP upgrades and useful subchips. Blue Moon exclusives can make certain encounters and rewards more efficient, so plan your route around the version's advantages.
No cheats or unlockables available
Tips and tricks
A folder with fewer chip codes is usually easier to use consistently in battle.
Tips and tricks
Keep at least one strong recovery option for longer boss encounters.
Tips and tricks
Use panels, barriers, and movement timing to avoid damage before counterattacking.
User Reviews
The battle system is still inventive, even if the tournament structure can feel repetitive at times.
User Reviews
Version-exclusive content gives Blue Moon extra replay value for fans and collectors.
User Reviews
Longtime fans usually appreciate the chip building and fast combat, though newcomers may need time to adjust.
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About Mega Man Battle Network 4: Blue Moon
Mega Man Battle Network 4: Blue Moon is a 2004 Game Boy Advance sci-fi, action rpg, turn-based strategy game, developed by Capcom and published by Capcom. Developed and published by Capcom, this is the fourth entry in the Mega Man Battle Network series. Players guide Lan and MegaMan.EXE through a tournament-driven story that unfolds across the real world and the network. The Blue Moon version features exclusive Navis, chips, and scenarios, while preserving the series' fast, tactical combat and… You can play Mega Man Battle Network 4: Blue Moon instantly in your browser at https://classicemu.com — no downloads or installation required, with cloud save support and mobile touch controls.
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Mega Man Battle Network 4: Blue Moon is listed under Game Boy Advance so players can find it alongside games from the same console, handheld, or arcade system.
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