There may be hidden complexities. Would you expect the search to be in terms of:
- a single country that the member has designated from the country list?
- a set of countries? (Quite tricky to specify via a menu option and hard to process). Also difficult to map Time Zone to countries or vice versa.
- members can specify TimeZone on their profile but given the current levels of paranoia, I wouldn't want to rely on it being accurate
- what about the people who have specified International? Would you exclude them?
- many people are not physically located in the countries they have designated. Would you use their GeoIP location instead?
Sometimes it would be nice to create open game or seek open games by location.
Why?
- it is nice to play with someone on same time zone.
- Sometimes you want to meet people from certain country (your favorite holiday location, old home place...)
- if you like to chat, common language is really nice thing...
This wouldn't be too difficult to add, would it?