Bitin' Off Hedz Variant

1. Take all of the different alternate dino types, write 'em down on index cards along with their individual rules.
2. Before the game shuffle the cards and deal 'em out to everyone maximally.
3. Everyone picks one dino to be, shuffle the unpicked cards, proceed to play normally.
4. When someone gets their head bit off or falls in the water, they put their card back into the "deck" shuffle and take two at random, pick one of those and go on like normal.

A little variety is the spice of life.