This game is quite interesting once you understand what you are even doing. The idea of balancing population is interesting, and I especially like how you create a soundtrack by playing different notes depending on whatās happening in a simulation.
But game kinda lacks feedback. First couple runs you donāt even make any decisions, just run the simulation with no context. This hurts engagement quite a bit, and I think you maybe could make it so that you get upgrade cards mid simulation and can apply them on the fly.
Itās also should be communicated more clearly what happens with pops. I had runs that felt pretty balanced but that suddenly ended saying one species went extinct. And I had runs where I seemingly had only one species, but it didnāt end until it died out.
And some quick UI suggestions, it would be great if your chosen upgrades stayed there after run and didnāt reset, and if when you apply upgrades they would show in stats.
But all in all, great work!