I am starting a new world on my switch after having a blast with rampant on PC. One of the things I enjoyed most about rampant were the enormous waves of larvae and small biters during the early game. It really forces you to commit to defense early. I hate how often I can almost skip automated turrets and ammo production entirely and directly go for flame throwers.
Deathworld is a bit too brutal, as I don't enjoy racing evolution too much, but I still want pollution to cause problems.
What settings would I need to adjust to get similar waves with extremely high numbers of low level biters?
Bonus points if train usage is heavily encouraged.