Maybe, maybe not, but if you thought playing games could enhance your odds of passing the digital test, why didn't you start playing video games as practice?
Also, with your logic, if, instead of a gamified assessment, they had a math test, would somebody who was not a math major complain that the test was biased against them?!
You were not at a disadvantage. Thinking that you were only because they tested something you were not familiar with despite the fact the the vast majority of candidates probably faced the same challange is not a mindset I would recommend.