The game I mentioned has several paperclip optimizing scenarios unfolding at the same time, including one where terraforming robots (some of which are designed like mammoths & serve a similar environmental purpose) keep getting stronger and stronger to protect themselves from robot hunters while the AI's central command system has gone missing. It takes place in a completely "reset" world, so from the perspective of humans the robots have always been part of the natural environment. Not the most realistic AI story, but very fun.