I'm running a sim with no costs except for the cost of maintaining a body (which is pretty high, ~0.15 per body). I raised the cost slowly, so Duplo probably had time to adapt. Shrinking violet used to do pretty good when the cost was ~0.1. Now nothing from outside survives in my sim If someone makes a veggie that would do well under these conditions, I'd be very happy. Right now I have to constantly re-populate with Alga Shellular, a stupid clumsy veggie that I made and which, therefore, sucks like a super-powered vacuum cleaner.