I think there are some updates in the 
I had trouble login into the game today. I kept getting an error message. I remember I had a similar issue a couple of months ago. At that time it also happened suddenly. But when I changed the browser the issue was solved.
This time deleting all cookies was enough to solve the problem, so I didn't have to change the browser again.
But that is not all. Today was full of new things in the game.
The picture became super dark! It is hard to see where to go. And I was a new user who played the game for the first time, for sure, it would take ages to find the way.
Also, the 'blowing balls' that appear when you shoot... I think they stay in the air for too long.
So, with these colour changes after 20 mins of playing the game, my eyes got too super tired...
There is also a new space where you get teleported sometimes when you start the game. And there are something like bacteria balls flying around and shooting at you. You can kill them, but you won't get rewards.
Ah, one more thing. The game start button doesn't work properly I think. I had to click on it several times before the menu with difficulty levels appeared.
Well, for sure, the game keeps updating, and that is a good thing!)
❗ All main game details you can find heref