Clam Blitz is a mode introduced in Splatoon 2 for Ranked Battle. It was introduced via an update video in November 2017 and added to the game in mid-December 2017. The game focuses on gathering clams to throw in the opposing teams basket.
The game scattered clams all over the stages. The goal is to get 100 clams into the opposing team's basket. When a player walks over a clam, they collect the clam with the line of the clams following them. If they are killed, the clams disperse in the around. Once the player collects 10, they gain a power clam. Power clams are powerful enough to remove the barrier around the basket, allowing the player's team to throw their clams in.