In the Marie’s Adventure game, you assume the role of Marie, a mage donning a cow-printed bikini, bestowed with a blessing by the last remaining god, Lavia. Her mission is to defeat a fallen god named Demolesta, who is responsible for losing more than 50% of the world’s population, leaving only 15% of them as females. Along her journey, Marie encounters party members willing to aid her in defeating Demolesta and restoring human populations through pregnancy. Lavia’s blessing enhances Marie’s strength and increases her fertility, enabling her to conceive and give birth more rapidly than regular humans.