Not sure, maybe it is present in more late part of the game.
But it would be nice to have battle part here with the ability to mutate zombies (some specific abilities addition) and battle with other players on-line in auto-mode. Nice concept for Droid/iOS deices also.
Strategy for 3-2:
Forget about starports. Build 1-st lasers at the maximum amount, infestors will do the rest.
3-3:
the same, but you will need to create as much on the side as possible. Once you managed to infect Artillery - the level is yours.
They are definitely being saved onto the server, but not loaded into the table on-screen straight away - so if you refresh the screen it'll be fine :) I'll look into why it's not updating the table for you though.
 "Lab of the Dead"){kind=icon}
 "Obliterate Everything"){kind=icon}
 "Monster Town"){kind=icon}
 "Accelerator"){kind=icon}
 "Burrito Bison"){kind=icon}
 "Critter Forge"){kind=icon}
Yes :) I need to optimize the sound system :)