Sea Battle.

Soviet electro-mechanical arcade (1974, Serpukhov Radio-Technical Plant). First-person periscope: pan the view to track World War II-era ships and fire a single slow torpedo straight ahead. Time the shot so the ship crosses the centre reticle when the torpedo reaches the horizon. 10 launches per session — 10 hits earn the 3-shot bonus round. Toggle auto-captain.

←/→ pan the periscope · Space/click fire straight ahead · time the meeting point