I can play BTD5 on Android without an internet connection just fine?
The [1.4 update](https://ninjakiwi.com/blog/game-update/21607-bloons-td-5-web-ios-and-android-updates) introduced "Everyplay", the screencapture feature which I only vaguely remember. I haven't seen the icon for it in for a very long time in my game. Perhaps it needed a Facebook account to be linked, which I haven't had in a very long time either. This could be one of the many reasons (besides cloud saving, license verification, IAPs) why the app would use an internet connection