The line comes from Subnautica, the underwater survival game developed by Unknown Worlds and fully released in 2018, where the onboard AI and PDA system speak status updates and warnings to the player. Players clipped short alerts like this one and reused them outside the game as clean notification sounds for streams, edits and memes. Its polite tone sits between a helpful reminder and a danger alarm, which is why creators also pair it with sounds like the GTA V notification for fake in-game alert jokes.