2 me that's crap. if other games show up fine and this game dose not then that would indicate to me that's it's something with how they have it uploaded to the market. I know nothing about what devs can do to specify what the game is compatible with but i definitely think it would be related to that and not the rom.
edit: This is direct from google
"The Google Play website will show all apps available on Google Play, even those that cannot be installed on your device due to incompatibility reasons.
Apps that are listed as not compatible with your device cannot be downloaded on Google Play. Some common reasons for incompatibility are:
Android OS version
Other hardware features (camera, graphics capabilities, etc.)
Developers are responsible for setting these compatibility requirements, so for more information or to request that an app become available for your device, we recommend contacting the developer directly. "
So this is something the dev can fix for sure. even tho it might be indirectly cause by the rom/device in can be fixed.
mate.. i think its the apk problem.. if you buy it from google play store it just works.. if you download it from somewhere patched.. i would think you need to find the correct version.. my version is 1.0.4
I downloaded this game and I think there is no problem with the game. When I open it, it stays on first screen. But when I use the USA vpn it goes to next screen and ask for the activation code, which I don't have :-( so I can't test further on my mi 2. So try using some vpn for USA. By the way, which country are you from?