There's also Doom 3 on the browser: https://wasm.continuation-labs.com/d3demo/
Re:Play Half-Life in the Browser
by badsectoracula on Wednesday March 09, 2022 @07:47AM
(#30613843)
This is what i was reminded of, but didn't remember the URL.
Sadly main reason i was reminded of it is because the Doom 3 one seems to have better responsiveness for mouselook - the HL version feels a bit too laggy.
(though even the D3 version has a tiny amount of lag which i do not remember when i tried it a couple of years ago - perhaps changes in the browser are to blame)
They moved to https://play-cs.com
The site itself seems to currently down but I was using just a few weeks ago. I found that port pretty impressive because multiplayer also works and still had lots of active players! (though ctrl-w for crouch and move forward doesn't, so I can't say it was a seamless experience)