About the game
Idle Submarine is an underwater collection game built around short dives and permanent equipment upgrades. Your submarine cruises above the seabed while you lift sunken finds into the water and guide them toward its intake.
Spend your earnings at the research station to improve the Fuel Tank, Engine, and Pump. Equipment purchases also raise your submarine level, unlocking new hulls and passive bonuses. Discover new treasure across ten regions, then continue exploring with your upgrades intact.
The playable build is an in-development version of the game.
How to play
Hold the mouse button or touch the screen to lift treasure with bubbles. Release to let finds descend, and time your holds and releases to bring them into the submarine’s intake. The pointer position does not aim the lifting force.
When fuel runs out, the submarine returns to the station. Review your haul, buy upgrades, and select Continue to begin another dive.
Technical highlights
- Gameplay follows FSM → Command → Scene Service → Domain Model, with node components owning visuals and input.
- A fixed-step simulation keeps treasure motion and collection independent of rendering frame rate.
- Dive checkpoints and result acknowledgments preserve earned gold and prevent duplicate rewards after reloads.
- Shared portrait and landscape layouts adapt the gameplay, upgrades, and results to desktop and mobile screens.
- Pooled views, viewport culling, reused geometry, and a 960×540 / 540×960 canvas base reduce unnecessary rendering work.
