Does player need Google+ account? - google-plus

Does the game player have to use Google+ account to use Google Play Game Services such as leader board, achivement, etc?

The player will be required to upgrade to Google+ before Play Games Services will work.

Related

Which API I should use if want to login from own website to play xbox XSAPI or REST?

I'm working on website where I want create tournaments and user will login and participate.
I want to track all the participated users data to announce the winner.
I'm confused which API will be helpful to develop such website kindly guide or provide any blog post
thanks you.

Getting a users complete achievement list through Google+ API

I run a cross-platform achievement tracker, where the user can gather and show their achievements from xbox, psn, steam etc.
Now I want to add support for achievements attached to a users google account (google+ achievements). Can I do that through the API somehow? Been searching but can't find anything.

How to obtain all the Google Hangouts a user has participated in?

The Google Hangout APIs do not seem to have the ability to fetch all Hangouts for a user. Also, the Google plus APIs to not seem to have Hangouts as part of activities or moments. Are there any Google APIs that return the past Hangout list to use along with the Google Hangout APIs?
There are not any public Google APIs to get a list of Video Hangouts a user has participated in. You can file a feature request if you would like to see such an API method.

do I have to handle both google+ API and google play game service to use google play game service?

I'm new to Android and trying to use google play game service for my app.
I found out from Google Developers page that there is a sign in guide in google play game service, but heard that i need to sign in with google+ account to use play game services.
So, my question is "do I need google+ account and also have to develop google+ API on my app to use google play game service?
Sorry my question is pretty messy, though I need help!
Thank you.
Play Games services features that use authenticated calls, such as posting high scores or joining a real-time multiplayer match, use Google+ sign-in. You will need to implement sign-in in your app; check out the docs at:
https://developers.google.com/games/services/android/init
You can have your game activity extend BaseGameActivity from the sample code and it will do a lots of the work for you.
Usually people refer to the "Google+ API" as the APIs for retrieving social information, like a getting a list of Google+ posts or sharing interactive posts on Google+. The sign-in is the same (it's obviously also using Google+ sign-in), but to use the Google+ API, you would also need to request additional scopes. See:
https://developers.google.com/+/mobile/android/getting-started

Inviting players to Game Center via email

I am developing a Turn-Based Game Center game and wonder if it is possible to invite players via email and not only players that all ready have the game and a user-id # Game Center?
Turn-based games powered by GameKit require Apple-ID centric invites. You can't programmatically invite a friend, which you would need to do if you were sending out email invites.
If you want to do email-based invites, you'll have to code your own solution and only use Game Center for things like achievements and leaderboards.
To invite a player to an online multiplayer game using Game Center, the user must have a registered Apple ID. The user must also own the game to be able to accept, however I believe the user will still receive a notification in Game Center about the invite.