Nope, no cooperation. They are the enemy to defeat. Between their pride and arrogance, and the fact they need to feed on men to survive and grow stronger, they can't compromise.So, you can't cooperate with succubus girls in this game? Either you kill them, or they kill you via sex? That's pretty sucks. Why can't player cooperate with them somehow without dying.
Is there any other succubus games, where male protag not die while encountering them in sex?
You can play Succubus Covenant: Warlock Saga. It's a side game to this one. You're a warlock that can form contracts with demons, including succubi. But pay attention to your choices; succubi will kill you if given the chance.