What is your magnum opus?

I created a Scheme LISP compiler that assembles to machine code in x86 format. What have you guys done that many people use today?

ive been playing some 20000 light years - this dumb python game where you make steam for a city.

ive started to familiarize myself with the code to make it better - no seasons because they piss me off. i just want to make a beatiful steam network and not having aliens or disasters trying to fuck me anally every few minutes.

also higher city levels. in fact maybe not even end game on a city level, just let them get higher and higher.

also a scrolling screen because that is just tooo small.


also visual feedback for node/pipe tech levels so you dont have to U-click everywhere like a spas.

and more tech levels too.