With the New Relic Platform, you can write a Plugin to report data about anything you want. There are Java and Ruby SDKs, and if you prefer, there is an HTTP API.
Flash fails to reach a large portion of the market, so Flash fails. HTML5 is the future. Also, this game (and many other flash experiences) crash my Flash plugin and take up more CPU usage than HTML5 video or canvas experiences.
You could alternatively develop a Go agent using our Agent SDK: https://docs.newrelic.com/docs/features/agent-sdk