After Reset™ RPG - a hard sci-fi role-playing open world game with old school top view, which action takes place in the future on Earth dying slowly after nuclear cataclysm that buried nearly all life on the planet.
That bear-sized creature has a little in common with human body it morphed (or dug?!) from. The speed of those metamorphoses is tremendous. That, definitely, points on the biomass trace.
Nothing natural on Earth is able to shift and boost organic cell division with such speed keeping its homeostasis under control. Not even a virus, cancer or stem cells.
Anyway, staying out of that thing would be a great idea.