We track the games’ performance and gameplay based on Your domains, not the game's ID. The ads.txt and DFP Form are the tools we use to know how much Gameplay and Ad Impression you are showing on your domains, that is why we strictly ask you to complete all the setup.
The data is reported on the report panel "HeaderLift", you can log in here with your credentials to keep track of your own performance and see all the metrics.
Feel free to analyze and adjust your business decision.