Hollow Tide App

You don't walk around in Hollow Tide. You sit at instruments. The station dashboard shows integrity percentages, cycle counters, power reserves, and a live exposure meter that climbs each time you run a sonar ping. Signals appear on the radar — static ones on the continental shelf, drifting ones deeper down, approaching anomalies that trigger orange warning banners on the main screen. Your job is to classify them, decide which drone to deploy, and choose the exact moment to pull back before something goes wrong.

How the station operates

• The sonar scan screen displays a circular radar with a cyan sweep line and concentric range rings; running a ping raises your exposure rating, which in turn increases hazard rolls on anomalous signals
• The drone hangar tracks multiple ROVs simultaneously — a Scout rated to 2,500 m with one equipment slot, a Scanner rated to 4,600 m with two slots, and a Heavy rated to 7,500 m with three — each showing individual battery levels and hull integrity
• During a descent, the live feed logs depth and pressure at each step; after returning, the expedition summary reports depth reached, samples collected, research gained, and whether the drone survived
• Deeper sectors require unlocking through sample analysis and accumulated research points
• The story resolves across several possible endings depending on how far down you push and what you find there

Atmosphere and visuals

The interface is deliberately cold and functional. Dark blue backgrounds, cyan readouts, green porthole lighting on the submarine hull, and mineral samples with glowing teal veins collected from the trench floor. Status indicators pair color with text labels — READY, CHARGING, REPAIRING — so the state of your equipment is never ambiguous. The app icon itself sets the tone: a riveted metallic submarine with four green circular windows staring forward, the title rendered in cyan and gold against a deep gradient.

Also bundled: a slot game

Hollow Tide ships with a second, entirely separate mode — a classic casino-style slot machine running on a 5×4 reel grid. Symbols include golden bells, red cherries, purple plums, watermelon slices, and value coins; jackpot tiers are labeled SMALL, BIGGER, SUPER, and MEGA (up to 10,000). The visual palette here — gold, deep blue, glowing cyan — mirrors the exploration side of the app, giving both modes a shared identity even though the gameplay has nothing in common. Win screens display a bold "GOOD HIT!" and show the payout amount in large yellow text.

One thing worth knowing

The sonar display — a cyan sweep line on a dark teal background — may present readability challenges for some color-blind users, and certain status states lean on color differentiation alone without always pairing a distinct icon. For an otherwise well-labeled interface, it's a gap that stands out.

Hollow Tide treats the player as an operator, not an adventurer. The instruments are the game — and the restraint of that design choice is both its strongest quality and the thing most likely to turn away anyone expecting a more kinetic experience.