The Engagement is about the story of Maxx and people around him. Maxx is on a business trip with Suzie (his best friend's girlfriend). He has the chance to have this girl for himself. But as well as he may lose his current girlfriend, Emily. Each decision makes a different outcome. Can Maxx have all the girls or no girl? It's all your decisions.
In order for you to be able to install this game, you need to enable (allow) installation of applications from unknown sources (Unknown sources) in the phone settings. Usually this item is in the Security section