I always found the way the "evil" road portrayed in games like Tyranny, Kotor-kotor2 and Ps:T much more fun to play than the usual "Me destroy everything because I´m a bastard" way, indeed.
It´s all about power, not blind destruction.
"Direct action is not always the best way. It is a far greater victory to make another see through your eyes than to close theirs forever."
"Be careful of charity and kindness, lest you do more harm with open hands then a clenched fist."
"If you seek to aid everyone that suffers in the galaxy, you will only weaken yourself and weaken them. It is the internal struggles, when fought and won on their own, that yield the strongest rewards. You stole that struggle from them, cheapened it. If you care for others, then dispense with pity and sacrifice and recognize the value in letting them fight their own battles. And when they triumph, they will be even stronger for the victory." -Kreia
Thanks
I think that Kreia is one of the best written and most interesting evil characters in gaming history.
She also has a backstory so it makes sense why she acts this way.
I want to add that her alignment is hidden from the player in this game.
By DnD standarts I would call her neutral evil. She is a psychopath who uses other people as tools to get what she wants. Her goal is revenge on the people who wronged her (both jedi and sith) and she does whatever is useful to achieve that goal. She does not want random murder and destruction and she does not care for the rest of the universe when it is not related for her goals.
If game devs can make evil characters that are at least half as interesting as her it would be fantastic.
I think she is a good example of what it means to be evil.
Being evil means you have goals and you do whatever is needed to reach these goals while caring little about how this effects others.
Being evil does not mean you intentionally seek to harm others or to destroy stuff.
Evil characters can be very efficient and rational.
Good characters have also goals and they can be just as rational, they just consider how their actions influence others and they might accept not reaching some of their goals or taking a more difficult way to achieve it if the direct way would cause too much harm to others.
The law/chaos part is about how they try to reach their goals.
A completely selfless good char who wants to help everyone for the sake of goodness is just as dumb as an evil char who kills and destroys everything because evil.
Prof. Dr. Dr. Mad S. Tist 
