For my Environment Creation I course, I created a gray box demo level called ‘Siege of Castle Blockland’, featuring basic player character mechanics such as sprinting, crouching, attacking, and interacting with items and NPCs, simple enemy AI that can detect the player and perform movement or attacking actions depending on player proximity, and level features that provide a full gameplay experience, such as opening doors, collecting keys, and defeating a boss at the end to clear the level.