Nice game! Works well on my Galaxy Nexus.
If the issue below is ironed out, I could imagine to keep it on my phone
I've played one round and I had to accept some terms for eventloop or something.
It read like "your device information is stored securely on our servers", that's when I've finally checked the permissions.
Why does the game need to read my contact list information, and store it on an external server? Is this permission pulled in with the external library?
You should at least summarize in the description what's happening with my data (or remove the permission altogether).