Penguin Massacre

Penguin Massacre is an arcade shooter where you can take on the role of a penguin, defending his territory by shooting other penguins who try to claim it for themselves. Penguins defend their nesting areas regardless of the situation they do, so provide a penguin with an arsenal, and it'll kill anything that tries to steal their possessions. Penguins are super cute but a penguin that has guns? That's pretty "cool" (pun not intended).