I think you should not make a game open new browser tabs. This is a red flag since this new browser tab could take you literally anywhere on the internet, to all kind of malicious sites.
I am not saying you are using this maliciously, but most players that have a little bit of media competence will not engage with your game. And that is in the end, not good design.
so yeah, no clue what is happening in the game. I was looking at a single screen and all i could do was opening new browser tabs in the background. So, I did not engage with the game.