In Blob Giant, players assume the role of a massive, shape-shifting entity that must navigate a vast, open world. The core gameplay involves manipulating the creature's form to overcome obstacles and reach distant locations.
The main objective is to grow the entity's size and absorb other creatures, while avoiding hazards and predators. The game runs directly in the browser and requires no download or registration, allowing for seamless play on a variety of devices. As the entity expands, it becomes increasingly difficult to control, requiring players to balance growth with strategic decision-making to succeed.