2.... d4
ZOMBIE CHESS!
I designed Zombie Chess (this one, anyway; I see that others have made their own versions over the years). Thank you for the kind words. It is easy for White to win as soon as the queen gets behind the pawns. So I am thinking that Black ought to be able to move a piece backwards if there is a white piece behind its piece (but not allowing Black to wrap backwards).
My brother Mike has also suggested some special moves to make playing Black more interesting: e.g., if you stack two or more black pawns in a file, the front-most piece can move two spaces forward. Something to give Black some more meaningful choices.
I have not played Viva Revolucion, and I'd like to see it.
Challenge accepted.
1.a4
1... d5
2.Ra3