Geneforge 4: Rebellion

The world is torn apart by a long-lasting civil war between an elite caste that previously held monopoly on creating artificial life, and a combined group of persecuted ordinary humans, genetically altered humans, and a variety of artificial creatures gone independent. Though the protagonist starts out as a rebel selected for genetic mutation using secret and risky rebel techniques, he is not restricted to only one side of the conflict. (mobygames)