We have 2 cheats and tips on iPhone. If you have any cheats or tips for Alien Hive please send them in here.
You can also ask your question on our Alien Hive Questions & Answers page.
Make sure you don't forget to evolve and match plants as you will need to rely on them as crystals become scarce the further into the game you get.
Make dealing with bots your priority because once you get three or four on-screen they will make things very difficult.