13 — Sushi Island

Swimming Cats remixed with bigger buffs and group fights. The finale, Shrimp Frontier, swaps in Director Kurosawah — extreme range, extreme attack.

Somewhat difficult: enemies arrive in groups and at high magnifications, drawing from the saga's growing rogue's gallery — Master A., Le'boin, Dagshund, Teacher Bear. Structurally this is Swimming Cats with bigger numbers, except for the last stage, Shrimp Frontier, which reworks the formula: Doge Darks spawn faster, and THE SLOTH's slot goes to the debuting boss.

Director Kurosawah is a Dark variant of Dark Emperor Nyandam with higher attack power, longer range, and a slower attack rate — artillery you must either out-range or rush between volleys. He's the stage's whole problem, and he doesn't travel alone.