Handling Invitations/user management to a multiplayer turn-based game (mobile)
<p>I'm beginning the technical design phase for a multiplayer, turn-based game.</p>

<p>I'm having trouble designing the solution for user management/handling invitations.</p>

<p>From my research, it seems like their is fragmentation on how this is handled today (google play services, facebook, and apple all have their own apis).</p>

<p>I'm reaching out to see how other's might have designed their user management and invitation strategies given the current landscape of what's available.</p>

<p>Ideally, for this app, the flow of interactions would look like this: <a href="http://i.stack.imgur.com/xCGkM.png" rel="nofollow">Gameplay interactions/flow</a>
<em>Note: Player 3 should be the last actor and shouldn't receive a notification until player 2 is done. The reason for this is because P3 wouldn't have any actions to take if P2 hasn't played yet.</em></p>