These site provide a overview about the data usage. The version is from the 12.08.19.
9 Nations use since 0.2a the Unity game engine. Unity has collected some or all of the following information about your device: unique device identifiers (e.g., IDFV for iOS devices and Android ID for Android devices); IP address; country of install (mapped from IP address); device manufacturer and model platform type (iOS, Android, Mac, Windows, etc.) and the operating system and version running on your system or device; language; CPU information such as model, the number of CPUs present, frequency, and instruction set support flags; the graphics card type and vendor name; graphics card driver name and version (e.g., “nv4disp.dll 126.96.36.199”); which graphics API is in use (e.g., “OpenGL 2.1” or “Direct3D 9.0c”); amount of system and video RAM present; current screen resolution; version of the Unity Editor used to create the game; sensor flags (e.g., device support for gyroscope, touch pressure or accelerometer); application or bundle identification (“app ID”) of the game installed; unique advertising identifiers provided for iOS and Android devices (e.g., IDFA or Android Ad ID); and a checksum of all the data that gets sent to verify that it transmitted correctly.
in the point of a crash the game will send some data to Unity’s Analytics. Unity has collected device information, like IP address and device identifiers, as well as events completed or actions taken within the game, including level, number of credits, time it took you to earn them, metadata about in-game communications and the value and details of purchases. Using our systems, the developer of the game has ongoing access to this data. This collection and use of data makes it possible for your experience to operate as expected by permitting you to do things like redeem rewards you have earned or return to where you left off in a game. Other Unity customers may have access to aggregated reports about game activity in general across a number of games. These reports are based, in part, on your game activities, but do not specifically identify you or your device. The reports described in this paragraph help developers make decisions on optimal methods to run the games they have made for you. For example, the developer may need to know the types of devices running the game to determine how to support game updates on an ongoing basis.
You can find more informations about Unity Analytics under unity3d.com/legal/privacy-policy
If you do not want your information collected by Unity Analytics for other purposes described herein, such as crash reporting or helping you save your place in the game, you need to play offline or use a firewall to block the game connection to the internet.