I think you need create a new menu of elements in which youl find the human,the enemy, fish(particles with diferent colors that move arround in water, eat vine(no vine no reproduce), reproduce and has a dying point of 110 aprox and a burning point of about 200, also it dies if dont find vine and or if a lot of time has passed.

Maybe sharks that eat fish and fight betwen themselves occacionally
Also birds 

Maybe also you should add PTLM(petroleum), that has a sticky property that sticks to any other element and if another particle of ptrl lands in a sticked surface, it slides until finding another empty space like gmbm, also burns slowly at 60 or more and harden when cold at about -5,-10

Its Black and a little blue on the edges