WWII submarine sim where you captain U.S. subs hunting Japanese ships across the Pacific. You'll plot torpedo runs, manage depth and speed to avoid detection, and track convoys through your periscope. Your crew gains experience over campaigns—veteran sonar operators spot threats faster, seasoned engineers handle damage better. Career mode strings patrols into a persistent officer progression; single missions offer standalone scenarios. Over 75 period vessels appear, from Gato-class subs you command to Yamato battleships you're hunting. Difficulty scales from arcade to full manual calculations for torpedo spreads and fuel consumption. The interface handles station-hopping and dive controls without drowning you in submenus. Multiplayer servers shut down years ago, so it's solo only now. Best for players who want methodical cat-and-mouse tactics over constant action.
