Empire Island - shooting game

Empire Island is a free online flash game of the category shooting games.

Build and defend your Empire Island through the ages.
Build up your population to raise taxes. Choose 30 different types of construction unit including several types of weapon, ranging from mud-ball towers and cannons through to advanced futuristic weapons such as lasers and missiles. Place defences including mines, explosive balloons and tesla coils. Build banks and markets to increase revenue.
Call upon powerful Acts of God, such as Lightning, Tsunamis and Firestorms.
Fend off ever more advanced enemies, starting from simple wooden boats, right up to alien invaders.
Upgrade almost everything!
One of the most advanced physics-based strategy games available. This is a thinking-mans strategy game, not to be confused with a Tower Defence game. If you find you are not earning enough money - you probably need to try a different strategy.
Walkthough here: http://armorgames.com/guide/empire-island-game-guide
Video Walkthrough: http://www.thepodge.co.uk/readarticle8.html

Most instructions are in game.

Use the mouse to navigate menus, buy and build units, select weapons and aim and shoot at the enemy. Remember this is a physics based game - your shots will arc so you need to aim carefully.

Upgrade your workshop and church to unlock new weapons and Acts of God.

Use Cursor Keys/WASD to scroll the screen.

Several keyboard shortcuts. Eg. "R" for quick repair - tap "R" to repair the selected unit, if the selected unit doesn't need repairing, then the next most damaged unit will be selected - you can then press"R" again to repair that unit (so just keep tapping "R" to repair eveything). "U" - upgrade, "B" - open build panel, "DEL" - sell unit + many more. You will need to learn these to get the most out of the game.