Retro Replay Review
Gameplay
The Day 5: Assault Dragon opens with an immediately familiar shoot-’em-up rhythm: you move across horizontally scrolling stages, shoot down incoming mechanical aliens, and collect weapons and power-ups as the pressure builds. That simplicity is a strength. You do not need to spend an hour learning its language before the action starts making sense; the fun is in staying alert as enemies use the stages’ depth to approach from farther into the screen.
Your pilot choice gives the game some personality. Kim Jin-hyeok flies the Miru Fighter, while Kim Mi-ri commands the Miru Base, and each gives a two-player session a clear on-screen role before the more unusual cooperative trick enters the picture. The weapon and power-up setup follows the line established by The Day II, so this is a continuation-minded shooter rather than a dramatic reinvention.
The fusion mechanic is the reason to seek it out with a friend. The two ships can combine into one mecha, splitting movement and firing between the two players. When you communicate well, that division can turn the usual scramble of a shooter into a focused little team exercise. When you do not, frustration can arrive fast: steering into danger while your partner is trying to line up shots is nobody’s idea of a clean victory. Solo play remains the straightforward route, but co-op is where Assault Dragon finds its most distinct hook.

Graphics
The game uses side-scrolling sci-fi stages with a 3D-like sense of depth, letting mechanical enemies move in from deeper parts of the screen instead of simply entering along one flat line. That added perspective is useful in motion because it makes an approach feel like an approach; you can see danger coming inward as the scrolling action continues. The Miru Fighter, Miru Base, and their combined mecha also give the action a clear mechanical centerpiece.

Story
This is an Earth-under-attack setup, with mechanical aliens supplying the threat and the two pilots supplying the response. It is a clean arcade premise, meant to put you in the cockpit rather than slow the game down with explanation.
Kim Jin-hyeok and Kim Mi-ri at least prevent the selectable ships from feeling entirely anonymous. Their craft names—Miru Fighter and Miru Base—make the choice easy to track, and their ability to join together gives the pair a practical connection inside the action.
Do not come to Assault Dragon for an elaborate science-fiction tale. Its story works as a brisk excuse for constant combat, and that is enough for a game more interested in the next formation of enemies than in lengthy narrative detours.
Overall Experience
Assault Dragon is a compact, old-school shooter with one genuinely memorable cooperative idea. The core shooting is recognizable genre territory, but the choice between separate ships and a shared combined mecha gives sessions with a friend a different texture from standard side-scrolling blasting.
Its best moments will come from working out that partnership: who can reliably steer, who can keep firing under pressure, and whether combining is helping more than it is complicating things. That makes it less of a pure solitary reflex test and more of a small co-op challenge where communication matters.
Give it a chance if you enjoy DOS-era sci-fi shooters and have someone beside you for co-op. If you only want a radically new shooter system, its familiar weapons-and-power-ups foundation may not carry the whole trip. But as a fourth-series entry with a lively two-player twist, The Day 5: Assault Dragon earns a look.
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