Zombie Quarantine was recently Greenlight by the Steam community. It will be releasing on Steam very soon.
If you want to play Zombie Quarantine now and can't wait for it to release on Steam then you can purchase it on Desura Indiedb.com
Updates fleshing out the game and improving the gameplay dynamics will be regularly released.
So after seven week's whit good gameplay I will try to leave it in my memery as memorable game. lol ;D