This proposal adds an activity called “breeding”, which allows two creatures to be replaced by their offspring, but it doesn’t yet give a mechanism for how breeding is initiated. Presumably by mutual consent somehow. I thought I’d separate that part, just so that this proposal doesn’t die for having a buggy initiation mechanism. Another proposal will need to be passed before any breeding can occur.

If the subrule “Evolutionary Variables” does not exist, this Proposal does nothing.
Add a new rule called “Breeding”:

Breeding happens like this: For each Evolutionary Variable, each of the two lifeforms involved in the breeding chooses a random number equal to DICEX + DICEY - 2, where X is 1 greater than eir own value of that Variable before the breeding began, and Y is 1 greater than the other lifeform’s value of that Variable before the breeding began. This random number replaces eir value of that Variable. A lifeform that starts the breeding process must finish it before taking any other game action.