Don't play on Android. Sync is broken. It takes 2 min at startup and always take the save from the cloud even if your local is more advanced. And the game don't save data on the cloud if you don't push the button save and quit. And if you don't have network at the moment you push that button, it won't save. The only way to be safe to play is to only make full run. Which is stupid for a mobile. Please fix it !