This game seems really awesome, I've had a few looks at it at Steam so far. I am a bit curious what does it mean that each and every pixel is 'simulated'? They use the statement many times, but I'm really not sure what that statement implies.
One of the earliest games (a Java applet) was somehow made to work in HTML5: https://dan-ball.jp/en/javagame/dust2/
This is the most feature-rich falling sand sandbox game with built-in Lua scripting: https://powdertoy.co.uk (their website appears to be down)
Although most of the cave flying games were from the dos era, probably the most famous one, wings, had a "new" version [1] made that runs on windows and linux.
Also, Liero/NiL might fit the bill, as the game involved extensive digging (more so than in eg. Worms): https://en.wikipedia.org/wiki/Liero
> Q: What does "every pixel is simulated" mean?
> A: Basically every pixel in Noita is made of some material. The different materials are simulated. E.g. Water will behave like a liquid, gasses will rise, sand will pile up, rigid bodies will rigid body... In addition to that we run simplified simulations of various chemical reactions, electricity, thermodynamics and so on.