GAMER SERVICES
Games are using different game services depending platform you are using. Here is list of relevant privacy policies for each gamer services.
Game Center
https://www.apple.com/legal/internet-services/gamecenter/
Google Play Service
https://play.google.com/intl/en_us/about/play-terms.html
Game Circle
http://www.amazon.com/gp/help/customer/display.html?nodeId=201487670
PlayFab
https://www.playfab.com/privacy
Skillz
https://corp.skillz.com/privacy-policy/
GAME ANALYTICS
Games collecting data in-game behavior and in-game progress, so we can offer best possible gaming experience for you. Here is list of relevant privacy policies for each game analytics services.
Google Analytics
https://policies.google.com/privacy
Unity Analytics
https://unity3d.com/legal/privacy-policy
ADVERTISEMENT
If you wish to limit behaviourally targeted advertising, you can do so by limiting ad tracking in your device settings. Please note that opt-out are specific to each browser and device and it may take a little bit of time before opt-out will take effect.
For mobile you can reset your Advertising identifier and depending on your device, select to opt-out interested based ads or turn on the Limit Ad Tracking settings.
https://policies.google.com/privacy
Unity
https://unity3d.com/legal/privacy-policy
Chartboost
https://www.chartboost.com/privacy
AppLovin
https://www.applovin.com/privacy
RevMob
http://mobilerepresentationinternational.com/privacy-policy.html
SOCIAL MEDIA
Some games are using social media to identify and interaction between players.
https://www.facebook.com/about/privacy