Cybersaurus is an amazing futuristic 3D adventure game from Darxun Games.  The game is similar to Mechwarrior and plays wonderfully on the iPhone or iPod Touch.  The game's features according to the Darxun Games site are:

Explore 6 stunning planets (11 maps fully 3D) with outstanding backgrounds!
Navigate through the solar systems using the interactive 3D map and destroy the robosaurs.

- 11 full 3D levels , 6 different planets and environments.

- 3D Engine with astonishing light system .

- 3D Audio engine.

- Full 3D Animations.

- Different characters.Every enemy has a different AI.

- Adventure style. In order to finish the game you have to accomplish various tasks such as collecting items.

 Currently, if you wish to play Cybersaurus you'll need to Jailbreak your iPhone (which you do at your own risk) - however, in a month or so keep your fingers crossed that you'll find this in the iTunes AppStore!  The game is one of the better ones for the iPhone so I highly recommend it.