Cool take on the old-school Text Adventure games. Good use of the 4-colour limitation, I still found it easy to see what the command options were for each situtation despite the colour limtations. Nice boot up sequence too.
For improvements, I would suggest auto-focusing on the Text Box after every action. You can do this in code by invoking a method like this:
using TMPro; [SerializeField] TMP_InputField inputFieldName; public void FocusInputField() => inputFieldName.Select();
Similar code if using legacy Input Field too.
Nice job!