Play Megaman Battle Network 4 Red Sun Online

Megaman Battle Network 4 Red Sun came out for the Game Boy Advance in 2003, developed and published by Capcom. It was part of that wave of GBA titles that really leaned into mixing genres, combining traditional RPG exploration with a fast-paced battle system. You play as a kid named Lan Hikari in the real world, while his NetNavi, Megaman, operates in the cyber network. The world is split between these two perspectives, and you switch between them to solve puzzles and advance the story.

You control Lan on a top-down map, talking to people and moving from screen to screen. The main goal involves participating in a global NetBattle tournament, which pushes you through a series of storyline tournaments and optional side quests. The combat happens on a grid-based battlefield; you select attack chips from a custom folder in real time, trying to delete viruses or enemy Navis. A key mechanic is the Soul Unison system, letting Megaman temporarily merge with other Navis to gain unique abilities and attacks. The game is structured around repeated tournament arcs, which can make the pacing feel cyclical. Navigating the sometimes convoluted internet areas requires a good memory. Despite that, the moment-to-moment action of building your chip folder and executing combos in battle keeps you engaged. It feels like solving a quick puzzle every time you enter a fight.