Maneater: The Shark RPG

Maneater is a strange game and a bit janky in parts but there is fun to be had.
The simplest explanation is it's a vaguely open world rpg where you play as a shark you eat people fish turtles and other sharks as you eat more you grow from a baby shark to teen then adult then elder and possibly one more stage. As you get bigger you get more powerful and can attack bigger prey move faster jump higher and break various level specific gates to get at new areas.