CSGO has been stat tracked on SteamCharts since July 2012, after going F2P the game is at it's - frankly - voluminous resurgence that is dwarfing any other FPS game on Steam and I imagine the world including China... nearly a decade after it was released in it's current iteration and almost two decades since the original CS appeared in November 2000.
The million concurrent player barrier was broken by CSGO in March 2020. No other game on Steam has ever had 1,000,000 players at once. TF2 is also free and is nowhere near this successful.
It's safe to say Counter Strike has emerged victorious above all other FPS games from the annals of Doom and Quake, to the modern day contemporaries such as CoD and Halo.
After reviewing for grammatical and consistency errors, I forgot about Fortnite - disregard everything I said.
1 million people playing what is basically a 20 year old game at 10:17am on a lazy Sunday? That's nothing. How many Travis Scott concerts has CSGO had?