This green version is mostly a simple sound experiment. I created some SFX with notes and short phrases in the C pentatonic scale; every time an electric shock appears on the screen, one of these random SFX plays. Similarly, when the Thing jumps, besides the "hop sound" SFX, one SFXs with super simple rhythmic patterns with percussive sounds is randomly played.

So it's a super simple system to get some pseudo-generative, random sounds that are tied to the gameplay and to what's happening on screen.

The effect is simple, kind of stupidly melodic, and also chaotic. But for those who like to mess around with music, it's fun to send the audio signal from the game into an effects processor to get pseudo-random textures in that key.