Here is my strategy for Easy Level 3 Dual Channel for the iPhone game GEODefense Swarm

High Score (1,775,150) and No Lives Lost:

1. Start with the four blaster towers near the exit, upgrade the second one from the bottom to lvl 2. This is good for the first two waves.
2. add four laser towers in a big rectangle pattern
3. place four more blaster towers across the left side
4. begin placing missile towers along the middle
5. add eight more laser towers
6. now upgrade your laser and missile towers

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