It was Edge I used before, and I only tested my own game on multiple browsers.
It actually works on Firefox.
Here’s the console log:
Godot Engine v4.6.stable.official.89cea1439 - https://godotengine.org index.js:452:16
OpenGL API OpenGL ES 3.0 (WebGL 2.0) - Compatibility - Using Device: Mozilla - ANGLE (Intel, Intel(R) HD Graphics 400 Direct3D11 vs_5_0 ps_5_0), or similar index.js:452:16
Build configuration: Emscripten 4.0.20, single-threaded, no GDExtension support. index.js:452:16
WebGL warning: drawElementsInstanced: Depth texture comparison requests (e.g. `LINEAR`) Filtering, but behavior is implementation-defined, and so on some systems will sometimes behave as `NEAREST`. (warns once)
Request for pointer lock was denied because the document is not focused.
HD Graphics 400 huh?

Yeah, my hardware is definitely stretched my your game, more so than my game, but I’d like to see a little more headroom than this.
Fun game, in the end.