I didn’t know:
In 1994, Hewlett-Packard released a miracle machine: the HP 200LX pocket-size PC. In the depths of the device, among the MS-DOS productivity apps built into its fixed memory, there lurked a first-person maze game called Lair of Squid.
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In Lair of Squid, you’re trapped in an underwater labyrinth, seeking a way out while avoiding squid roaming the corridors. A collision with any cephalopod results in death. To progress through each stage and ascend to the surface, you locate the exit and provide a hidden, scrambled code word. The password is initially displayed as asterisks, with letters revealed as you encounter them within the maze.