LATAM key means you could activate this code in Antigua and Barbuda, Argentina, Barbados, Bermuda, Bolivia, Brazil, Bahamas, Belize, Chile, Colombia, Costa Rica, Cuba, Dominica, Dominican Republic, Ecuador, Falkland Islands (Malvinas), Grenada, French Guiana, South Georgia and the South Sandwich Islands, Guatemala, Guyana, Honduras, Haiti, Jamaica, Saint Kitts and Nevis, Saint Lucia, Mexico, Nicaragua, Panama, Peru, Puerto Rico, Paraguay, Suriname, El Salvador, Uruguay, Saint Vincent and the Grenadines, Venezuela.
I suggest that you can register a new steam account ( Argentina is the best, because most of games are very cheap). You can google how to register a Argentina steam account. (Whether you can activate the key depends on your steam wallet area. But I don't recommend that you change the wallet area of your existing steam account because it violates the steam rules.)
The world has been abandoned by its gods and is scarred from the rampage of the Titans. Humanity is struggling to regain strength and rally its forces. You, however, have more pressing concerns: your own life has been shattered and you must set off to reclaim what is lost amidst the darkness that is spreading throughout the world. Who knows, maybe you'll even save the world at the same time?
Three threads of destiny lie before you. Three ways to rise up against the Titans and regain your soul. Which path to take? The choice is yours.