Desire Z version 2.3.3... Why Can't I download?

Played this game at a friends house and LOVED it! But i can't get it to work on my Desire Z! :( Says its not compatible! My Device is showen in the Play Store as "HTC HTC Vision" and my Android Version is 2.3.3..

If i download the .apk and try to update from there, it always redirects me to the play store where i, once again, can't download the app. -.-

I then Installed the "hacked Version" later and it worked and downloaded the Update. The only Problem is that i don't want to have a cheat version with all the stuff ready to buy, i want to earn it! I also want to play for real with my friends and get all updates in stuff, so i deinstalled it again.

Is there a way to get the Update to NOT redirect to the Play Store?
Is there maybe a special .apk for the Desire Z i could use?

Thanks already for your help Folks!