New device and some apps have installed without asking

[Guest awarner]

My new LG E900 Optimus 7 arrived today, and after running the pre-NoDo and NoDo (which appears to include the new security update) I noticed that a few of my apps and one game that I have on my HD7 have automatically installed without asking for permission etc?

Strange that this has happened but I sort of like the idea just wish I could have an easy method to install all the other apps and games (and progress in the game saves).

I can only presume that this is something the developer has programed into the app? as I can not find a setting to allow this on Zune.