Game+ offers several ways to find who is online so you can find gamers who are available to play right now - or know if your Game+ friends are available for a match.
The Online State Indicator
The Online State indicator appears next to every user handle or name displayed in the Game+ app. This indicator has 3 states:
Appears in Green. Indicates the user is in the app right now.
Appears in Yellow. Indicates the user was active in the app in the last hour. These are often users that are interested in playing a match - but may have set their phone aside for the moment.
Appears semi-transparent. Users that haven't been on in awhile. However, if they have posted a Challenge to a Community or their friends - they are likely looking to play when they next log on.
The Community Challenge Groupings
Each Community features a carousel of Challenges from Users Online Now and Users Online Recently.
The Community Online Lists
Each community features a list of community members that are either online now or were recently active.
The Suggested Friends Online List
The Suggested Friends tab on the Friends page shows users that are online now or recently active.