Pros:

- Low gravity in out side areas
- Information, Barricades, and Upgrades are unlocked
- Variety in barricades
- Two seprate unlock panels
- 3D Ship model over building area
- Futuristic outter space enviroment

Cons:

- Many tanks
- Some barricades do not slow down zombies much

Conclusion:

A very good map, it is challenging but not too difficult. It has features that are not in other custom maps, and the enviroment really adds to the game play experience.