Controls:
Arrow Keys - Move Periscope
Space - Fire Torpedo (Surface only)
Z - Dive Deeper (5m max per press)
X - Surface (5m max per press)
Scores: Ships (20), Subs (10)
Warning: Enemy vessels will fire back!
Tip: Dive underwater to avoid enemy fire!
Submarine can stay underwater for extended periods.
Radar shows threats: ● = Projectile, ○ = Preparing Attack