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GameCenter isn’t easy to work with. For one it’s networking, and networking errors are hard to debug because there’s no natural UI. debug print messages is all you’ve got. It doesn’t help that GC is none too detailed on what you did wrong, and sometimes weird errors can occur if you use the API incorrectly.

1. A match request by name can take up to 2 minutes to reach the remote device. Unprepared for this I’d just sit there trying the request again and again, wondering why it wasn’t working.

2. The iOS simulator doesn’t seem to work for GKMatchmaker requests. I don’t know why this is, but the iOS simulator cannot even startBrowsingForNearbyPlayersWithReachableHandler.



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