Project Aces developed Ace Combat 4: Shattered Skies as an arcade-style combat flight game for the PlayStation 2, with Namco publishing it in 2001. It marks the fourth mainline entry in the Ace Combat series and stands as one of the most celebrated aerial combat titles of its generation. Players fly as a fictional pilot who goes by the callsign Mobius One, joining a war that takes place in the alternate world of Strangereal. The conflict centers on Erusea, a nation that has seized control of a massive rail cannon network called Stonehenge, and players must fly missions to dismantle that threat across 18 story-driven sorties. What separates this game from a conventional flight simulator is the way it pairs arcade-friendly controls with a compelling wartime story. The game frames its narrative through a young civilian boy who witnessed key events of the war, giving the campaign an emotional depth that goes well beyond the cockpit.
Updated: Jun 22, 2026
Screenshots

1.5 GB · PS2 ROMs
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Specifications
| Platform | PS2 ROMs |
|---|---|
| Genre | Adventure |
| File Size | 1.5 GB |
| Release Year | 2001 |
| Developer | Project Aces |
| Updated | Jun 22, 2026 |
Overview
Project Aces developed Ace Combat 4: Shattered Skies as an arcade-style combat flight game for the PlayStation 2, with Namco publishing it in 2001. It marks the fourth mainline entry in the Ace Combat series and stands as one of the most celebrated aerial combat titles of its generation. Players fly as a fictional pilot who goes by the callsign Mobius One, joining a war that takes place in the alternate world of Strangereal. The conflict centers on Erusea, a nation that has seized control of a massive rail cannon network called Stonehenge, and players must fly missions to dismantle that threat across 18 story-driven sorties. What separates this game from a conventional flight simulator is the way it pairs arcade-friendly controls with a compelling wartime story. The game frames its narrative through a young civilian boy who witnessed key events of the war, giving the campaign an emotional depth that goes well beyond the cockpit.
The game offers 18 campaign missions that span a wide range of objectives, from dogfighting enemy squadrons to bombing ground installations and taking down massive rail cannons. Players choose from a roster of real-world fighter jets that grows as they progress through the campaign, with each aircraft carrying a set of standard missiles alongside a special weapon unique to that plane. These special weapons include air-to-air missiles, air-to-ground bombs, and multi-lock systems, giving players real tactical choices before each sortie. Mission environments cover coastal cities, mountain ranges, and large-scale naval engagements, keeping the variety high across the full length of the game. The title supports a two-player multiplayer mode for competitive aerial battles. Ace Combat 4 received widespread critical praise on release, sold over three million copies worldwide, and helped establish the PlayStation 2 as a home for premium flight combat experiences. It remains a landmark entry in the series and one of the finest flight combat games the platform produced.