Keyboard/Mouse: Click on-screen number pad or use numbers on keyboard to enter depth. AD keys or arrow keys to move. Click on-screen X button or hit X key on keyboard to clear depth entry. Hit spacebar to launch depth charge or click the Launch button.
Hunt down hostile submarines before they blast you into the abyss. To strike, calculate their lurking depth—solve the target’s math puzzle, then unleash a thunderous barrage of explosives. Dodge incoming torpedoes at all costs; one direct hit chips away at your hull’s integrity. Stay sharp, solve fast, and keep firing—if your health plummets to zero, it’s game over.
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