Widow Submarine XI UPDATE is a free game available on Roblox. This update brings several new features and improvements to the game.

One of the notable new features is the restyled Carbon Monoxide leak, which adds a more realistic and immersive experience. Additionally, players can now enjoy the new Pressurized Water Reactor and Core Control Buttons, enhancing the gameplay mechanics and control options.

The update also introduces armed torpedoes, allowing players to engage in underwater combat. The inclusion of a cafeteria and upgrades to the infirmary provide more realistic and detailed gameplay elements. Furthermore, the addition of a Hazmat Suit and radiation in the reactor room adds a level of challenge and immersion.

Visual enhancements include a new underwater background, upgrades to the sleeping bunks, and upgrades to the escape deck. The game now also features torpedo cargo, which adds a new layer of strategy and gameplay dynamics.

One notable change is that instead of a reactor explosion, submarines now crush or implode for a more realistic effect. The developer has also explained that the visible bow window has been added back, as it allows players to see the torpedoes they have fired.

Overall, Widow Submarine XI UPDATE brings a range of new features and improvements to the game, enhancing the gameplay experience and adding more realism to the submarine simulation.