The world 'level' is a bit tricky for me as it appears either with or without the definite article. I'm trying to understand when I can get rid of the definite article and when it should stay. I couldn't find any information on the Internet.
What's the difference in meaning between these sentences and are they correct?
What subjects do you study at the extended level?
What subjects do you study at extended level?
I love playing games at easy level.
I love playing games at the easy level.
Is it because each level is already unique and therefore you can dispense with the definite article? I've seen both used and the option without any article seemed to be more prevalent in general.