The Metamorphica - A Book of Mutations

The Metamorphica is a system-less net-book by Johnstone Metzger, noting a wide range of powers and mutations for a wide range of gaming genre. It it useful for post-apocalyptic, superhero, fantasy, supernatural/horror or space-opera settings, where characters would play or encounter mutants, superhumans, demons, freakish lab-experiments, monstrous aberrations, cosmic horrors or alien creatures.

The master mutation table lists 650 mutations, in six categories (Body: Form, Body: Function, Mind: Behaviours, Mind: Cognition, Psychic Powers, and Supernatural Attributes), and all-together, uses a d1000 (roll with three d10s), but each category can be rolled individually or in groups (rolled with different types of d100s, plus increments of 100s—it quite flexible).

Being "system-less," it is up to the Game Master to figure-out how each of the mutations effect the rules.

On top of what is noted on the master mutation list, there are additional tables to help flush-out a character or creatures, even covering different genres (Experiments in Secret, Mutant Superheroes, Post-Apocalyptic Mutants and Swords of the Chaos Lords) and creature types (Beastlings, Demons, Mutant Hordes, Mutant Plants, Uplifted Animals and Xenobiology).

You can buy a (digest-size, softcover) copy here for about $5, or download it here for free. Enjoy!

Thanks for the heads up. I love random tables.