Fantasy Creature Simulator

Rean lived in another world for 18 years and awakened the system on this day. It was a game that Rean planned to play in his previous life, and it was also the main culprit that took him through time - "Fantasy Creature Simulator". In the simulator, you can draw biological cards, place them in the big world for control, and develop these creatures through adventures. He is the ruler of the North, and he is also present in the demon world... He even transformed into a dragon, demon, giant, titan creature... And when the creatures he controlled became high-ranking figures in various forces, the situation in the world became strange. When the demon army and the orc army went to war. The commanders of the two opposing armies were creatures controlled by Rean, and a funny scene came. "General, why do you know the enemy's situation so clearly!?" His subordinates marveled at their general's ability to obtain enemy intelligence without leaving home. "General, why don't we attack the enemy?" "No need to fight, they are all mine." "?" Although they were fighting, the two opposing armies suffered no casualties at all. And when the creatures controlled by Rean reached the top of all forces, the world entered a strange state of peace. Races that were originally full of contradictions were able to cooperate smoothly, and the entire world was connected as a whole under Rean's influence.