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Display the [Google Play Logout] button under Games> Options.
Google requirements : In-game logout button implementation required (You must implement "Google Play 로그아웃" as the text. / Do not use game controller icon)
You must implement it so that you can see the login button again when you log out.
If the guest is logged in, do not show it. (Only when Kakao is logged in)
Apply 'achievements' in game (Achievements)
At least five clear, reachable, and diverse levels of achievement must be provided
API calls when accomplishing achievements
You do not have to show UI every time you achieve achievements
You need to show a Google achievement icon that moves to the Google Play achievement in the game achievement view. (Do not use the Google Play Console icon. Achievement icon Must be used)
Enable Google Play Game service on Google Developer Console
Connec : https://play.google.com/apps/publish
Add achievement : [Google Developer Console - Game Service - Select App - achievement] Menu
Assets required for achievement registration: 1) achievement Badge 1M or less, 2) App icon / app introduction image / graphic image (The same preparation as the ASSET registered on the app introduction page)
d. Tester Registration : Register your test account in the [Google Developer Console - Game Services - Select App - Test] menu.
Until the app is published in the Google Market, you need to have a Google account registered as a tester to test Google's game
