I think starting with their local currency is a good start in knowing what payment systems should be accepted. At least, you must implement a function where they can conveniently convert their local currency to cryptocurrency so this could attract their attention if you were to open a gaming business in Asia.

In the Philippines, I highly suggest that you have an option to pay using our convenient mobile app (e.g. GCash) since such is already linked to several payment methods that can be conveniently converted and transferred from one currency to another. This kind of step must be discovered and studied by your team before implementing such option.