Sea World is a fun game that requires visual intelligence and planning skills. You need to plan and anticipate what will happen after you remove some fish from the screen. Of course, your attention to detail is super significant in this brain game as well.
This game also assesses your cognitive flexibility to think of a new solution and not fix on the old solution. You need to draw a line between fish of the same species which are close to each other. Once you draw a line, this fish will disappear, and the fish above them will drop in their place, with new fish appearing on the screen.