You fight them in the sky. Between missions, you hear their story.
Ace Combat 04 was the first in the series to establish a fictional world called 'Strangereal,' but what made it unforgettable wasn't the setting—it was the two perspectives. You play as Mobius 1, a legendary pilot who almost single-handedly turns the tide of war. Between missions, a young boy tells you about Yellow 13, the ace from the other side. You shoot him down eventually. But by then, you know his name. You know he took care of a stray dog. You know he was tired of the war. The game doesn't ask you to sympathize—it just makes you see. And once you've seen, you can't unsee.
About this game
Ace Combat 04: Shattered Skies (2001) is a combat flight simulation game developed by Project Aces and published by Namco for the PlayStation 2. It is the first game in the series to establish the fictional 'Strangereal' setting—an alternate timeline that became the foundation for most subsequent entries. The single-player campaign follows Mobius 1, a legendary ace pilot who almost single-handedly turns the tide of the Continental War. A parallel narrative—told between missions by a man recounting his childhood during the war—relates the story of Yellow 13, the leader of Erusea's Yellow Squadron and Mobius 1's arch-nemesis. The game is the most critically-acclaimed installment of the series, scoring an average of 89 on Metacritic, and holds the record for highest sales in the franchise's history.
Key Features
The game features over 20 licensed real-world aircraft including the F-22 Raptor, Su-37 Terminator, and F-15E Strike Eagle. The campaign consists of 18 missions across varied environments, from desert canyons to snowy mountain ranges. The dual-narrative structure—alternating between Mobius 1's combat missions and the unnamed boy's recollections of Yellow 13—creates an emotional weight unique in the arcade flight combat genre. The soundtrack, composed primarily by Tetsukazu Nakanishi and Hiroshi Okubo, with contributions from Keiki Kobayashi in his first major project, became one of the most celebrated in the series.
The Story Behind
Ace Combat 04: Shattered Skies was revealed in an early build titled simply 'Ace Combat 4' at Tokyo Game Show 2000. It was developed by Project Aces, Namco's internal development team dedicated to the Ace Combat series. The game marked a significant departure from the real-world settings of earlier entries by establishing the 'Strangereal' universe—a fictional alternate timeline that would become the series' signature narrative framework. Released in 2001, it arrived during the PlayStation 2's early dominance in the console market and represented a technical showcase for the hardware. The game's commercial and critical success was unprecedented for the series, cementing Ace Combat as one of Namco's flagship franchises.
Tricks & Tales
Composer Keiki Kobayashi joined the Namco Sound Team during the development of Ace Combat 04, marking his first major project. His contributions to the soundtrack would later elevate him to the position of sound director for subsequent entries in the series. The majority of the soundtrack was composed by Tetsukazu Nakanishi and Hiroshi Okubo, the only two members of the Namco Sound Team remaining after Ace Combat 3: Electrosphere. Yellow 13, though a fictional character, became a legendary figure within the Ace Combat fan community, with his personal emblem and aircraft livery becoming iconic symbols of the series. The European release was retitled 'Ace Combat: Distant Thunder'—a localization decision unique to that region.
Collector's Guide
Region & Compatibility
The PS2 is region-locked. A machine and a disc must belong to the same region to work together: NTSC-J (Japan and parts of Asia), NTSC-U/C (North America), or PAL (Europe, Australia). A Japanese console plays Japanese games. It is also Japanese 100-volt hardware — a fat model used in North America's 120 volts or Europe's 220–240 needs a step-down transformer; the slim models use an external adapter that can be swapped for the right one. DVD films carry their own separate region code, fixed to the console as well.
Maintenance Tips
The PS2's most vulnerable part is its optical drive. The laser pickup weakens with age, producing the famous Disc Read Error — discs that load slowly, read intermittently, or read games but not DVDs (or the reverse). Keeping the vents and internal fan free of dust matters, especially on the larger 'fat' models, which run warmer. Replacement laser units are still made, but match the part number to your exact model before buying, as several incompatible types exist. DualShock 2 controllers commonly develop sticky or drifting analog sticks with age; the rubber and contacts wear, and both are repairable.
What to Watch Out For
Before buying, these are the points worth knowing — from someone who handles original Japanese Ace Combat 04: Shattered Skies copies regularly.
Will a Japanese NTSC-J copy of Ace Combat 04 work on a North American or European PlayStation 2?
No. PlayStation 2 consoles enforce region locking—a Japanese NTSC-J disc will not boot on a North American NTSC-U/C or European PAL console without modification or third-party boot discs. The safest and most reliable way to play a Japanese copy is on a Japanese PlayStation 2. Region-free modification chips exist, but installing them requires technical skill and voids any remaining warranty.
How should I clean or maintain a PlayStation 2 game disc?
If the disc won't read, gently wipe it from the center hub outward—never in a circular motion—using a soft, lint-free cloth. For stubborn smudges, dampen the cloth lightly with distilled water or a disc-cleaning solution designed for optical media. Avoid household cleaners, which can damage the protective coating. If the disc has scratches, professional resurfacing services or disc repair kits can sometimes restore readability, though deep scratches affecting the data layer cannot be repaired. Store discs in their cases, away from direct sunlight and heat, to prevent warping.
Does Ace Combat 04 have save data, or does it use passwords?
Ace Combat 04 saves progress directly to a PlayStation 2 Memory Card (8MB). The game does not use a password system. Without a functioning memory card with available space, campaign progress and unlocked aircraft will be lost when the console is powered off. Used copies may include save data from the previous owner—this can be deleted from the memory card management screen in the PS2 system menu if a fresh start is desired.
Unexpected Discoveries
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Rooms this game lives in
Wander deeper — explore the themed rooms where Ace Combat 04: Shattered Skies sits alongside its kin.
Memories from around the world
This is a young museum, and this page is still waiting for its first voices. The memories people send reach Taisei personally, and the ones that move him find a home here over time — always with the writer's blessing. Yours could be the very first for this game.
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