Serum is a first-person survival title developed by Game Island that was recently launched in early access on Steam. With the genre becoming ever more popular in the last couple of years, especially in the indie sphere, fans have been treated to a wealth of great entries within it. Serum sets out to distinguish itself via its unique mechanics, specifically the use of the titular substance to sustain and empower the player character, as well as its world exploration, crafting, and building systems.