In Deisim you can live the experience of being a powerful god.
You can build you own world from scratch and help mankind to evolve from the stone age to modern age.
Perform miracles and provide them the needed resources or make them suffer with disasters.
You can do what you want in Deisim. You are in charge and nobody will judge your actions, but you must take care of the heresy slowly corrupting your people and converting them to the false god.
You are the all mighty, but humans are the source of your power.