Deep Sea Express

One cargo. One descent. No second chances.

Deep Sea Express is a first-person deep-sea submarine delivery game made for Mini Jam 209: Deep.

You pilot a small industrial submarine through a dangerous ocean trench while carrying fragile mission-critical cargo. The deeper you go, the darker the water becomes. Pressure rises. Mines, falling debris, and narrow trench walls threaten the mission.

Your submarine can survive rough movement, but the cargo cannot. If the cargo is destroyed, lost, or crushed by the abyss, the mission fails.

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Jam Theme & Limitation

• Theme: Deep
• Limitation: Only one life

The theme is interpreted through a deep-sea trench mission, crushing pressure, low visibility, and an abyssal delivery route.

The limitation is represented by the cargo: there is only one payload, and if it is destroyed, the mission is over. No replacement. No backup. No second chance.

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Gameplay

Navigate through the deep sea, avoid hazards, protect the cargo, and reach the drop-off zone.

• First-person submarine navigation
• Fragile cargo delivery
• Deep-sea pressure and low visibility
• Sea mines and falling debris
• Physics-based cargo risk
• Short atmospheric jam prototype

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Controls

• W / S — Forward and reverse thrust
• A / D — Steer / strafe
• Space — Ascend
• Ctrl — Descend
• Q — Tow / pull cargo closer
• Shift — Brake / stabilize
• R — Restart

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Objective

Deliver the cargo to the deep-sea drop-off point before the abyss destroys it.

If cargo integrity reaches 0%, the mission fails.

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Recommended Browser

For the best experience, use a modern desktop browser such as Chrome, Edge, or Firefox.

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This is a short game jam prototype focused on atmosphere, physics, and tension. The goal is not combat — it is careful navigation under pressure.