I can verify that the following works just fine:
1. Start Player on device one
2. Compile and broadcast app one from AppGameKit IDE
3. Wait until the app is running on device one
4. Start Player on device two
5. Compile and broadcast app two from AppGameKit IDE
6. Wait until the app is running on device two
7. Start Player on device three
8. Compile and broadcast app three from AppGameKit IDE
9. Wait until the app is running on device three
10. Start Player on device four
11. Compile and broadcast app four from AppGameKit IDE
I would have tried for more, but I ran out of devices.
Devices one and two are Android 3.2 and Android 4.1, respectively. Devices three and four are iOS 6.0 and iOS 5.1, respectively.
Cheers,
Ancient Lady
AGK Community Tester