Either mode puts you in a flying craft and allows you to interact with enemy and friendly units in several 3D cities populated with skyscrapers.

Game Play: I initially wrote this game off due to its sluggish frame rate and lack of enemy detail.  However, I did like the polished menus and nice opening sound effects. 

But I stuck with the game and was greatly rewarded.  As you upgrade the engines, the speed of the ship and the game greatly improves. The 3D environments are impressive – you can look up as you climb a skyscraper or go plunging towards the ground.

The ability to upgrade ship systems and the wide variety of weapons are a big plus – gattling guns, bombs, homing missiles, smart missiles, and smart bombs are at your disposal.  

You really get sucked into the 3D environment as tanks appear on the ground and enemy ships come at you from the air – all the while you hover over the ground between buildings.

Skyhammer has such a bold and lofty vision: create a 3D world, let you go anywhere in that world, and at the same time put in a multitude of enemies.  Because the game pulls this concept off so well, it deserves my highest rating. 

Pros: upgrade ship, 3D environment, great concept, many weapons, dual modes of play
Cons: frame rate is slow at times, lack of detail on enemy ships, missions can become routine