I don't know if you noticed it or if it was made on purpose but the backgroung of the map change each turn.
Maybe it would be better to make it static when a game party is launched.

Maybe make the game better by adding more malus for each garbage, something not fixed like 1.

It's a bit weird that changing the lang too many times some up the screen reloading, and maybe a way to change the volume faster would be good too.

Also adding keys to do some actions would be nice. And opening the settings during the game too.

Some functions are missing so there are???.

Maybe a file explaining how do to read the code for the version_js might be a great idea.

It is annoying to spam clic the mouse.

Add a description a each machine, add a description about the effect on lvl up since it's always the same.

It's hard to buy staff, the list is too long. Maybe make things easier?

When a staff like "Katrin Salhab" is bough, staff price is not changed.

A recycling center should be less convenient since upgrading it is pretty useless.

Maybe something, like we need 20 garbage to produce a resource and only one, can be produced
per turn.

The score can take some weird values, such as 8100.0062612 so maybe make a better function.

This sample might help

score <- function (s, g, t, dd, ns, fe, fa){
  score <- s - g
  if (score > 0){
    score <- ifelse(s > 10000 * 2, sqrt(s), s)
    score <- score + score * (1 / log(t))
    score <- score + sqrt(dd / t)
    score <- score + score * (1 / log(ns))
    if( g > 1 ) score <- score - score / log2(g^2)
  }
  if(fe + fa < 10) score <- score / 2
  round(score)
}

score(2322992,1,129,154381563207,400,10,10 )

for (i in sample(1:10000, 50)){
  cat("i=",i, " for ",
    score(10032,i, sample(1:700,1), sample(
      50000:3000000, 1
    ),sample(0:300, 1),350,170 ),
      "\n"
  )
}

Maybe a better image for the gate such as a GIF ?

Music is reloading each time we are changing a menu

A lot of values are not translated since v3.

We should find a better picture for the source.