While Sega has been vague about them launching the game in more countries than the US, today Phantasy Star Online 2 is launching in more countries. The countries are:
Argentina, Australia, Austria, Brazil, Canada, Chile, Colombia, Czech Republic, Denmark, Finland, France, Germany, Greece, Hong Kong, Hungary, India, Ireland, Israel, Italy, Mexico, New Zealand, Norway, Poland, Portugal, Russian Federation, Singapore, Slovakia, South Africa, Spain, Sweden, Switzerland, Taiwan, Turkey, Great Britain, United States
For PC players it’s important to not uninstall the Windows 10 version of the game if you decide to switch to the Steam version. The game will require the Windows 10 version to link accounts. You can read more information about this here.
The game is available on the Microsoft Store and Steam.