Geneforge 4: Rebellion for Mac

From Spiderweb Software:

Geneforge is a fantasy role-playing epic with a science fiction twist. In Geneforge , you explore a huge world, choose which side you will fight for, and make your own horde of completely obedient mutant monsters.

You are an apprentice Shaper. You are being given the power to create life and mold it to serve your own needs. The whole world fears and respects the Shapers. Your secrets are many, and your power is absolute.

If you need a servant, you have but to create it, and it will gladly die for you.

But when you and your teacher are sent on what seems to be a simple mission, things go horribly wrong. Monsters roam the countryside. Your allies turn on you. Your teacher disappears. And you find yourself in the middle of a conspiracy to use forbidden powers and overthrow Shaper rule.