This is a well-polished game, about the player protecting penguins from being attacked by the snow cannons.
You have 2 defense lines, fire, and ice.
Fire requires wood and ice requires ice, very easy to understand.
At some point in the game, you will get an upgrade, to strengthen your character's power.
It might look easy at the beginning, but soon it will turn into a Danmaku game if you don't pay enough attention to it.
Overall, a great game to enjoy.