The Bug & Seek: Isopods Expansion includes 20 new isopods to discover and catch + a new mastery category to level up! Once downloaded, these critters show up as unknown bugs in your codex, and like the other 180+ bugs in the base game, each isopod comes with its own unique tagline and codex description based on its real life characteristics and behavior.

More details on the official game page of Bug & Seek: Isopods Expansion ...