From January 2021 many browsers will no longer support Flash technology and some games such as Penguin Massacre may not work.
Solutions are being studied to allow Flash games being playable again on browser. If your game doesn't work you can try one of the similar games on this page.
Penguin MassacreAuthor : ArcadeBomb - 11 680 plays
The penguins have gone crazy and are attacking your igloo in their hundreds! Take to your fortress and defend yourself, massacring the penguins before they attack the fortress walls and bring your stronghold down. The more penguins you kill, the more money you’ll earn. Use your money to then buy new weapons and improvements for your shooter.