How to know if an arcade game is running?

[KenetCF]

Hello there,

 

I am looking for advices for this topic, I want to create a mod for an arcade game (Dance dance revolution and Stepmania 5) , but I want it to run just when the player is playing (I mean , after insert the coin and press start) , and I want to close it as soon as the game over appears , so , I was wondering how can i search for the variable of "In-Game" , I want to do this mod with C# hep , so it would be great if you could tell me how , after having the memory adress of that variable, search it with c# , and look for its value.

 

Thank you.