I made pokesear.ch, maybe you've heard of that?
I also made Dino Dash and Spaceship Shipping but I doubt you've heard of those.
I'm currently working on too many projects at once, I'll let you know how they go here.
What I collect and why
In order to know how I can improve my website or games, I collect the following information and send it to a third party for processing:
IP address to know unique visitors/players, and roughly know where in the world my audience is.
What people do in a game. For instance which levels are finished or which upgrades are purchased. This helps me figure out where people get stuck, or if a level, upgrade or other feature is (not) something the user wants.
Unique device identifiers, for serving (personalised) advertisements in game.
In paragraphs below I will explain which systems I use that collect data.
Unity Ads and Unity Analytics
As listed above I use the services Unity provides for analytics and ads. See https://unity3d.com/legal/privacy-policy for more details.
In-game progress and unlocks
As listed above I use Local Storage to provide the games I make with the ability to save which levels are finished or which upgrades are purchased. This system is built into all modern browsers and is a feature of the Unity game engine which I use to create my games. This storage is used to keep track of values such as "currentLevel=3" and "soundEffectVolume=50%".
If you have any further questions on the data I store in my games then please feel free to contact me at firstname.lastname@example.org