[H] Game Keys [W] TF2 Keys

Since I'm based in UK, I believe it is.

These are the restrictions for the game:

Gotham Knights:

LATAM (incl. Mexico): probably {sub/752390}
RU/CIS: {sub/824572}
Asia (not China, but includes Macau and Hong Kong ) + Pacific (incl. Oceania): {sub/752393} 
CN: {sub/752389} 
Africa + Turkey + Israel + Middle East: {sub/752392/} 
Everyone else: {sub/527688} - can be redeemed everywhere 

Graveyard Keeper is more likely a ROW key. No restrictions associated to it as far as I can find.