I am an avid gamer who players a couple of hours of Apex Legends and Call of Duty Modern Warfare everyday. And I've been info FPS gaming for 2 decades now.
To play a game released a couple of decades ago and see it take up almost the same amount of resources as the games I mentioned earlier gave me a chuckle.
I commend the developer for his effort though. To make a game like that run on browsers is a mighty impressive effort and it is Uber cool. I don't dispute that even for a second.