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Play Submarine (Sigma) (English) Online
Submarine (Sigma)
Play Submarine (Sigma) online. Reverse the underwater approach, bomb fuel tanks and rescue bubble-trapped people through four changing rounds.
Browser play

Arcade — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| RetroPad A / B / X / Y | Z / X / A / S |
| L / R | Q / E |
| Insert coin | V |
| START | Enter |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Submarine (Sigma)
Quick start
- Compare forward torpedoes and downward bombs.
- Slow or reverse when the next approach is crowded.
- Bomb fuel tanks to restore the gauge.
- Rescue people in floating bubbles when safe.
Controls
The two attacks fire torpedoes forward and drop bombs downward. Movement can slow the craft and reverse the scrolling view, allowing a return toward a missed fuel tank.
Submarine (Sigma) — About this game
Submarine (Sigma) lets its underwater craft slow down and even reverse the scrolling scene, making a missed fuel tank recoverable if there is still room to backtrack. Torpedoes attack forward and bombs fall toward the seabed, where destroying fuel containers refills the supply. People trapped in floating bubbles provide rescue targets amid hostile machines and destructible enemy torpedoes. Four changing rounds pass a castle, forest, ruined city and mountain terrain. Learn a deliberate retreat before entering another ambush, then keep the fuel gauge in mind when waiting for a safer opening.
Cheats
No cheats have been added for this edition.
Player verification and sources
Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.
- Browser test and catalogue publication date
- Browsers and devices
- PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
- Player engine and core
- EmulatorJS 4.3.0-pre · arcade
- Tested by
- rwEmulator
Sources and editorial basis
rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.