Parasite Days is an intriguing adventure game developed by 合同会社ズィーマ, available on the Android platform. In this game, players wake up to discover a peculiar and adorable creature growing from their arm, which turns out to be a dangerous parasite that seeks to drain its host's vitality. The choice is yours: will you eliminate the parasite or allow it to consume you?

The game revolves around your immune response, as it is crucial to your survival. You must choose supplies wisely to enhance your health and withstand the parasite's onslaught. Along the way, you will uncover food combinations that produce gastronomic reactions, adding an extra layer of challenge to your struggle for survival.

Parasite Days boasts simple controls, eliminating the need for complex motions. This ensures a smooth and accessible gaming experience for players of all skill levels. Additionally, the game offers multiple endings, with the story evolving based on your actions. Your choices will shape the narrative and determine your fate.

One of the standout features of Parasite Days is that it is completely free to play. Players can enjoy the full experience without having to spend any money. The game also does not require any previous knowledge of the series, as it features a standalone story. Prepare yourself for a thrilling adventure filled with both good and bad endings.