GEO Defense is a tower defense game for the iPhone. It’s easy to play, but hard to master.

Here is my strategy for the Resistance is Futile level.

• start with a couple of laser towers that will take care of the first few waves, just keep them at level one for now
• begin placing more laser towers at the top of each sharp corner, keeping them at level one
• when the creeps start to get through the lasers and into the upper track, place blaster towers in the gaps on the top track
• once you’ve placed 5 of them, place a few blaster towers by your laser towers
• now place as many missile towers as you can
• when you’ve ran out of room for missile towers it’s time to upgrade all of your lasers to max
• now upgrade the missle towers along the top edge of the screen as much as you can and the end should be in site