The WebGL game was build with my 2D game engine "Impact", which I previously ported to C[1]. The game has a 3d view, but logic still mostly works in 2 dimensions on a flat ground. The N64 version "just" needed a different rendering and sound backend.

[1] https://phoboslab.org/log/2024/08/high_impact

So you're writing the game in C and targeting the N64? Utilizing your custom Impact game engine, which is also written in C?

Do you flash the game to a custom cartridge for testing?