Devtools or F9 while in game. Type a famous magic word in the title screen to access all levels. Not sure how to do this on a phone which is what I was referring to - but framedrops are pretty obvious.
I've done a quick test and it runs very smoothly on my original OnePlus One from 2014 (so 11 years after the game). This is on latest Chrome, Android 11 (LineageOS 18.1).
I still find it amazing that this game never made with this in mind, the web tech at the time on the OnePlus One was nowhere near able to run this in browser and it works perfectly today!
To be fair my reference browser is Firefox, WebGL is a fair bit slower there.
What blows my mind with this technology is little things: porting the game to the browser gave me a half-working mobile port basically for free (had to implement touch input handling in Neverball). On top of that, thanks to SDL2 and the game controller web API, I can attach a game controller to my phone and play the game in the browser on my phone with a game controller. It just seems unreal that this combination of technology just works.
