Use the trebuchet to throw the rock towards the castle. Kill everyone to pass the level. Mouse/Space to Fire, Release, and Reload [R] to Reset Arrow Keys to View Castle
Place towers on strategic locations. Block off routes along the map to guide the penguins in a certain direction. Upgrade towers to increase their firepower.
This game combines in-depth strategic gameplay with action arcade elements. Select a race, engage in commerce, combat, and exploration, buy and sell ships, weapons and technology, colonize planets and build stations to create an empire (or help another empire grow). It's a game with many features that you just have to find out about yourself by going through the tutorial a couple of times before playing.