Earth Defense Force Iron Rain is a reimagined take on the series' giant-monster shooter action, set in an alternate storyline with soldiers battling massive alien invaders across destructible cities. Cooperative play remains central to its chaotic combat.

While set apart from the mainline continuity, it preserves the franchise's signature blend of oversized enemies, city-wide destruction, and campy tone, delivering the same over-the-top team-based firefights the series is known for.