Looking for a game in which the main character/characters are the villains

[Kokoro]

What of gta games? You okay with those?

GTA is not bad, but it lack of good scenario, and after some hours of gameplay you are tired and bored doing same things (steal cars, rob peoples, shooting with other gangsters, running from police, etc) I can't play it to long...

What I search is smething with deeper story, like:

Evil organization want to conquer world;

You are devil lord and want to conquer underworld (like in "Disgaea" series);

You got cursed weapon and you sold your soul to devil for power (like in "Soul Nomad and World Eaters", where you can choose demon path and kill your former friends, and others).