2010 Xbox 360 Arcade
game by Halfbrick Studios
that combines both quick platforming and block puzzles. The cast consists of skeleton creatures known as "Raskulls"
who must retrieve some "Shiny Stones"
from a Rat Pirate group called the Pirats
... That's pretty much the whole plot.
Not related to the line of children's bicycle helmets that resemble animals and monsters.
Raskulls provides examples of: